All language subtitles for Mythbusters.S12E07.Hypermilling.Crash.Cushion.1080p.WEB-DL.AAC2.0.H.264-XEON_track3_[eng]

This is a car.

And this is a car
on "Mythbusters."

Do not try what
you're about to see at home.

We're what you call
"experts."

On this episode
of "Mythbusters"...

Whoo!

...Adam and jamie have
a heavy-hitting movie myth...

And it's a man.

"ar-rah-rah-rah-rah."

...Stuck between
two chubby cops...

Come on! We got to get this guy
to the car right away!

He's got
an accident to attend!

...Could a sandwiched suspect...

Let's do this.

...Survive the
mother of all truckin' t-bones.

Aah!

Boom!

Better than a cup of coffee,
isn't it?

Wow.

Meanwhile,

Kari, Tory, and Grant

Have the most exhaustive
fuel efficiency fable

In "Mythbusters" hisTory.

Follow us for fuel savings!
Learn about hypermiling!

Could a troop
of traffic tactics...

Engine off.

Shut off the engine.
Let's save some more fuel.

...Really combine
to double your miles per gallon?

I'm starting to get it,
hypermilers -- I'm getting it.

Or is this a myth that puts
the "rage" in road rage?

She just gave me the bird.

Yeah, you hate us.
You hate science?

Who are the Mythbusters?

Adam savage...

Oh!

That's science.

...And jamie hyneman.

I'm ready.

Between them,

More than 30 years'
of special-effects experience.

Together with Grant imahara...

Oh, it's burrowing!

...Kari byron...

It always makes me
feel dangerous.

...And Tory belleci...

There's something
you don't see every day.

...They don't just
tell the myths.

They put them to the test.

-- Captions by Vitac --
www.vitac.com

Captions paid for by
Discovery Communications

All right, jamie. I'm gonna
paint you a picture,

And I want you to guess
the myth -- are you game?

I'm ready.
Here it goes.

It comes from
a foreign action movie

Called "headhunters."

You can't shrink a head.

No.

In this movie,
our hero is seated

In the back seat
of a police car --

You can't drive
from the back seat.

No.

Let me just
get through the sTory.

He is seated
between two really big cops.

And the bad guy wants to
kill him so badly,

He takes a truck and he t-bones
the cop car at full speed.

Except that our hero
survives the crash.

Because he's protected
by the padding

Provided
by the two big guys?

Exactly.

In a car accident,
could you be protected

By the people
you are sitting between?

It's a movie myth

That puts the "wide"
in wide-screen.

Could a set
of heavyset policemen

Really protect you...

...From a terrifying
truck t-bone?

Or has this myth got
a fat chance?

So, what's the plan?

Well, this whole myth
is predicated on the idea

That you're better off
being between two big dudes

Than you are
being alone.

I think that means
we should see

If we can illuminate
some of those forces

With a scale test.

See if we can collect
some relative data?

Exactly.

This is the exact make and model

Of the car
that gets t-boned

In the movie clip
that we're replicating.

I'm about to mock it up
in 1/6 scale

So that we can actually see

What's going to happen
inside that car

When we hit it
with the truck.

Adam's
polycarbonate compact car...

...Is the first of four things
the guys need

For their small-scale test.

All right.
There it is.

Second is a truck stand-in,

And for that, Adam's got wood.

Great.

He's building
a swinging battery ram...

Akunamuta!

...That should log
the perfect t-bone benchmark.

The third ingredient
is easy -- one crash test dummy.

That's awesome.

Which just leaves
the padded policemen.

So, my little dude's ready
to go into the rig,

But I need a couple of big dudes
to place on either side of him.

What are they gonna be made of?

Well, humans are basically
bags of water,

And that's what my big dudes
are going to be.

I'm not gonna use
straight water balloons, though,

'cause I don't want them
to break

And I'd like them to
be kind of barrel-shaped.

So I'm going to sew out of some
really nice leather...

Ahh!
I love the smell of leather.

...A pair of leather cylinders
to house my water balloons in.

That should give us
a really good picture

Of what it's like
to bounce around

Between a couple of big dudes.

Ooh. Aah.

Dude number two.

With all the players primed,
it's time to swing for science.

We're gonna smash
our miniature car twice --

Once with a dummy in it
by himself

And once with him padded
by these two water balloons.

Now, we've got a sensor in here

Which will record the difference
between those two impacts.

And for impact number one,
baby buster's flying solo.

Scaled car crash
in 3, 2, 1.

That was quick.

In real time,
the tiny t-bone looked okay.

But slowed down,
it was anything but

As buster got thrown
left, right, and center,

Peaking at 150 g's.

Now it's on
to the padded version.

For impact two,

Will the two cop cushions
lessen buster's blow?

All right.

"oh, no!
This truck's out of control!"

"no!
Here it comes!"

3, 2, 1...Blam!

First impressions are that
the crash seemed less intense.

Ohh!

That looks a lot better.

Wow. It's like
a forced bro hug.

But what does the data say?

Our dummy experienced
30 g's from the impact

Between the two big guys.

He experienced
over five times that --

Over 150 g's --
without that extra padding.

So if this actually holds up
in the full scale,

It could work
because 30 g's is survivable.

150 g's is not.

Next, a myth
about going the extra mile.

All right. So, you guys have
your driving shoes on?

Because this myth
is the mother

Of all fuel-efficiency
techniques.

It's called hypermiling.

Oh, is that where you drive
a certain way

And it gets you
really good gas mileage?

Oh, not just really good
gas mileage --

Great gas mileage.

According to this myth,

There's just a few simple things
that you can do

To double your mileage.

Regardless of the type
of car you have,

You can significantly reduce
your fuel consumption.

Wait. So, are
these techniques legal?

Well, not all of them.

I mean, there is one where
you can roll through stop signs.

But the ones
that we're gonna be focusing on

Are completely 100% legal.

And they double
your gas mileage?

That's what they say.

It's a question
as old as the car.

Is there anything you can do

To make your gas-guzzler
guzzle less gas?

Can some
simple hypermiling techniques

Really double your mileage,

Or is this fuel fable
running on empty?

All right. So, you mentioned
a massive road trip,

But that sounds a little more
like a finale, right?

Yeah, exactly.

Hypermiling is about taking
a bunch of small techniques,

Combining them, and getting
an overall fuel efficiency.

So, what I think
we need to do

Is break down
each of these techniques

And find out how fuel efficient
each of them are.

Okay.
So, what are they?

Actually,
out of the top six,

We've already done three
on our show.

For example, we know,
at high speeds,

It's better to drive
with your windows up

And your a-c on.

This test is being done

By professional drivers
on a closed track.

Your results may differ.

We know that
your fuel efficiency increases

When you drive relaxed.

And we know that over-inflating
your tires by 10%

Can really boost
your mileage.

We're getting
less rolling resistance

And therefore,
better fuel efficiency.

Yeah, but there are three
that we have not tested,

And that is limiting
your speed on a freeway,

Overall control
of your acceleration,

And turning off your engine
at a red light.

All right. Well, why don't
we start with the speed test?

I mean, that's easy.

We could drive around a track
at three different speeds,

Compare the fuel usage.

Sound good?

Sounds cool.

Let's hit the road.

So, that's
six hypermiling secrets,

And the Mythbusters have
already ticked off three.

However, before they put
them all together,

They need to test the rest,
starting with limiting speed.

But rather than hitting
the highway...

We're gonna save
so much fuel.

In your face,
global warming.

...First they're hitting
the runway.

We're here at the alameda runway
to test hypermiling.

Now, a car is most
fuel efficient at higher speeds

Because it's using higher gears

And it's using
momentum of the vehicle.

But at a certain point,
those gears max out.

You actually use more fuel
to get more speed.

Not only that --
the faster that you go,

The more wind resistance
you're gonna experience,

Therefore making it
less fuel efficient.

So, there's a theory
that driving slower

Might actually save you fuel.

And to test that theory,

They've set up a circuit
one mile long.

Follow us for fuel savings!
Learn about hypermiling!

They'll drive 20 laps
at 45, 55, and 65 miles per hour

And get the fuel efficiency
of each speed.

But how will they track
their gallons per mile?

This piece of equipment
right here

Is a very precise flow meter.

It'll tell us
how much fuel we consume.

This is connected
to the exhaust system.

It's got a temperature sensor,
pressure sensor,

And a flow meter.

It's got a weather center here

That helps us out with humidity,
atmospheric pressure,

And ambient temperature,

And a gps to tell us precisely
how far we travel.

So,
with the high-tech rig on board,

Now it's time to hightail it
for the test.

Ready for a road trip?

45-mile-per-hour test.

3, 2, 1, begin.

Position running.

Road trip!

Don't worry.
You're not seeing triple.

It's fun driving
in circles, eh?

It is.

They do it in nascar
all the time.

With over 20 minutes
at the same speed for each test,

We're gonna need
a split-screen montage.

I prefer road trips
where we stop at destinations

Rather than take data.

What do you mean?

This is the road trip
to science.

I think we're in the lead.
I don't see any other cars.

And while
fuel efficiency data collection

Isn't the most stimulating...

Sometimes you get to
blow things up.

Sometimes you drive in circles
with the air-conditioning off.

...The Mythbusters find a way
to make it interesting.

It's a consistent pattern
here.

Every time we go
in this direction,

It's 18 gallons per hour,

And every time we go
in that direction,

It's about 22 gallons
per hour.

At higher speeds,

The wind resistance is affecting
the gas consumption.

But will the hypermile speed
of 45 miles per hour avoid that?

All right, kids.
We're almost home!

Thank goodness.

Finally, after over 30 laps,

It's time to pull up
and pump out the data.

And we're here.

And test.

Okay, let's take
our numbers

Over to
the data acquisition team,

Let them export them,
and do our comparison.

I think we're gonna see
some serious savings.

Well, it's over to kent johnson
and his team

For the final tally
on the fuel efficiency.

So, it's looking pretty good.

At 65 miles an hour,

We're seeing
about 34 miles per gallon.

At 55 miles an hour,
it improved to 17%.

And at 45 miles an hour,
it improved about 30%.

That's actually really good
for a myth.

Yeah, these hypermilers
might be on to something.

They might,
because a 30% saving

Just by decreasing your speed
to 45 miles per hour

Is impressive.

So far, it's looking really good
for this myth of hypermiling.

It turns out,
after looking at the data,

That if you drive
at slower speeds on the freeway,

You will in fact save fuel.

But that is just one piece
in the puzzle,

Because remember, we're trying
to put all these together

In order to
double our mileage.

Later,

Can the Mythbusters double
the bank from their tanks?

This stinkin' traffic

Is stopping and ruining
my coasting abilities.

Shh! Shh! Shh!
Calming.

And the big rig
takes on a big gig.

That's a big dude.

But will buster survive?

He's smiling.
He liked it.

Can being sandwiched
between two corpulent cops

Really let you survive
a tremendous t-bone?

Small-scale said, "maybe."

Ohh.

That looks
a lot better.

So now it's time to up the ante
at alameda runway.

Today, instead of
remote controlling the vehicles

Or pulling them with cables,

Jamie and I will be driving
this baby right here.

Oh, yeah. It's on.

Yep, for full scale,

The Mythbusters will literally
be putting their lives

On the line for science.

That ought to do!

That's one big rig,
and two truckers raring to go.

So, now to put the car
before the horsepower.

Allow me to introduce you

To the car
we will be smashing today.

It's not only the same
make and model as the car

In the clip
we're attempting to replicate.

It also has
a special significance to me.

Here, take a look
at this picture.

That's me at 25 years old,
20 years ago,

And that is my first car.

Yes! This is the same
make and model as my first car.

Once the car's all lined up,

The final ingredient
for test one is the passenger.

This is our human analog.
It's called a syndaver.

It has individual muscles,
bones, and organs

Just like a human.

Now, it will be our
crash test dummy for this test,

And we're gonna x-ray it first

To make sure
all its parts are intact.

Immediately
after the accident,

Our dummy
will be x-rayed again

And examined
by friend of "Mythbusters,"

Orthopedic surgeon
noah weiss.

And we'll see just what kind
of injuries our dummy sustained.

Yep. It's all good.

Now, in the movie,
our hero was seated

In the back seat of a car
just like this

Between two large policemen,

And we will do that crash.

That'll have to do.

But in order to find out
how good or bad

That might have been for him,
we need a control.

And that's why, in this test,

Our guy will be seated all alone
in the back seat.

Yes. You'll be fine.
No. You won't be fine.

He's not gonna be fine at all.

And to quantify
just how "not fine" he'll be,

The team adds
pcb accelerometers,

Meaning the sandwiched suspect
is all set.

I'm glad I'm not you.

Cautiously,
jamie climbs into the cab

And takes the truck
to the far end of the runway.

Then it's "go" time.

All right, jamie.
Are you ready?

good to go.

Crash test control

In 3, 2, 1...Go!

Like an angry walrus,
the truck heaves into action...

...Accelerating to the
50 miles an hour of the movie.

Here it comes!

Wow!

That was amazing.

That was one hell of a thud.

Talk about crash...

...Bang...

...Boom!

Their green machine's
been totally totaled.

Well,
that'll wake you up.

That impact was...
It was frightening, actually.

Hitting up on the car
at that speed,

You don't realize
how fast you're going

Until you kind of get
close to it,

And then you realize
that this is gonna be serious.

And it was.

It was like
a wracking explosion.

It was a bang.

Jamie may have lived
to tell the t-bone tale,

But the question is,
has buster?

He looks
a little more flexible

Than he was
when he first went in.

Well, firstly, dr. Weiss
delivers his prognosis.

Dr. Weiss, how is our patient
after that accident?

Well, this patient has sustained
multiple devastating injuries.

There are fractures
and dislocations of the neck,

The thoracic spine,
the low back, and pelvis.

This patient
is very, very dead.

Wow. I want to
say thank you,

But also --
that's just so horrifying.

And for a second opinion,
dr. Harding has the g-load.

All right, david.
How did our guy do?

The chest saw 540 g's.

Ow!

And his head saw 620.

That's -- that's --
that's dead.

Deader than a doornail.

Yep,

Because that's over six times
the survivable threshold.

The difference
between this kind of crash

And what happens
between a couple of cars

When they hit on the highway

Is that the truck here
is a brute.

And the numbers
bear that out.

You've got enormous figures
on the g-loads.

The big question here is,

What happens
when we put our dummy

Between a couple
of fat guys?

Will he survive then?

Looking at this kind of damage,

It'll be really something
if he does.

The Mythbusters
are doubling down,

Testing if hypermiling methods
can double your mileage.

Hypermiling's efficient,
just not time efficient.

So far, limiting your speed
to 45 miles per hour

Scores you an extra 30%.

Those hypermilers
might be on to something.

But now to get off the freeway

And start hypermiling
in traffic.

The plan for this
experiment is pretty simple.

We've laid out
a driving course.

You sure that Grant's the right
person to be the test driver?

There's 20 laps per circuit,

And we have stop signs

And randomly timed
traffic lights.

Now, for the first test, we're
going to just get a bench mark.

It's our control.
We drive normally.

Like their previous test,

High-tech wizardry
will track the fuel consumption.

Okay, this is the control test
for hypermiling, lap 1.

Let's do this.

And to make sure there are no
other variables, the a-c is off.

All our designated driver Grant
needs to do is drive normally...

Hey, mom, dad,
are we there yet?

Not there yet, honey.

...Accelerating and braking
as he usually would...

Oh, god. I hate this light.
I know. It's so long.

There's not a single
other car -- what's the hold up?

...And sticking to the speed
limit of 30 miles per hour.

Science makes me car sick.

Then, after 20 laps,

They've got
their control baseline.

It was really interesting
to watch the equipment

As Grant was driving.

Even at idle, the car is using
about 0.5 gallons per hour.

And then,
when Grant was speeding up,

He was getting up to
about 6.5 gallons per hour.

Now it's time to see what
the techniques of hypermiling

Are gonna do and how it affects
how much fuel we use.

Hopefully, we save some.

Yep, and those
hypermiling traffic tactics

All rest on how you
accelerate, stop, and brake.

Now, for this,
you see a light,

You start to decelerate
in case it turns red.

If you have to stop
at a red light,

You turn the car
completely off.

And then,
when you start up again,

You accelerate
really, really, really slowly

To save as much gas
as possible.

Now, acceleration
is basically burning fuel,

But braking is a complete waste
of the car's energy

Because you're basically
stopping all the momentum

Of the vehicle.

Now, how's this gonna translate
into the fuel consumption?

That's what
we're about to find out.

Okay,
painfully slow acceleration.

You're doing well.

Uh-oh.
There's a stop sign coming up.

Decelerating early.

Make a full complete stop.

Really smooth acceleration.

This is like
my driver's ed test.

Interesting thing.
There's no peaks right now.

It's all just kind of
consistent, low fuel usage.

Just like the control,

Grant must stick to the
30-mile-per-hour speed limit.

But this time,

He's limiting both his
acceleration and deceleration.

See,
you slow a little bit

In anticipation
of a possible red

And rolled through it.

Nice.
Yeah.

And when they don't catch
the green light...

Oh, oh, oh, oh.
Here comes the light.

Slow. Slow. Slow.

Shut off the engine.
Let's save some more fuel.

Engine off.

We should have done this
during the winter.

Green light.
Oh, geez.

Okay.

Just like the control,

They complete
20 sweaty circuits,

And eventually, it's time
to find out how fuel frugal

This technique really is.

- All right.
- Whew. We made it.

Nice driving.
Thank you.

Well done.
Whew. Ohh.

So, the results are in.
Let's take a look at the data.

Now, I need a graph here.

As you can see,
in Grant's control test --

Him driving normally,
which is a little scary --

He was able to get
13 miles per gallon.

But then,
on his hypermiling test --

His eco-friendly driving --

He was able to get
17 miles per gallon.

That is a 30% increase.
This is incredible.

But remember, this myth
is about doubling your mileage.

So, we need to take
all these techniques,

Put them together,

And see if we can get
that mythical double mileage.

aah!

That's another two
ticks for the hypermile code.

Which means it's time
to put it all together

And go road tripping.

I love you, too!

There's no way
a solo middle-seat suspect

Will survive a t-boning truck.

Whoo-ha!

This patient
is very, very dead.

But will some
big-boned busters help?

We've now come to the point
in the episode where it's time

For jamie and I to make
a pair of plus-sized busters.

Now, here's the problem we have.

They got to weigh
350 pounds apiece,

Which means just making them
is going to be difficult

Both in terms
of moving them around,

Installing them in the car,
et cetera, et cetera.

There is so much
static electricity in this foam.

Check out my hairdo.
Whoo!

So, we've come up with what
I think is the perfect solution,

Which is to carve our dudes
out of an open-cell foam.

I'll state outright I've never
worked with a piece of foam...

This freakin' big before.

I didn't even know
you could get them this big.

Then we will coat the outside
of our carved figure

In a hard rubber

And put it in the car.

Is this how michelangelo
starts the pietà?

I know what you're saying.

"that doesn't weigh
as much as a person."

No, it doesn't.
That'll make it easy to install.

Once it's in the car,
we will fill it with water.

It's a lightweight solution
to a heavyset problem --

Two giant blocks of foam

And two Mythbusters armed
with two very different ideas.

Adam's going for
the sketch-it-and-see approach,

Drawing an obese outline
and letting rip.

Jamie, on the other hand, is
being a little more methodical.

To sculpt my fat guy,

I could just start hacking away
at a chunk of foam,

Which is what Adam is doing.

I opted, instead, to do it
from a computer-generated image

That I found online.

This is a top view of our guy,

And what we've done
is slice him in chunks

That end up
looking like this one.

This is around
the midsection of his body.

This top surface represents
the top surface

Of a 4-inch slab of foam.

So, when I cut this out,
all I have to do

Is stack all these other pieces
together...

One fat guy in 2-d.

...And I've got my guy.

It's classic "Mythbusters."

Adam forges ahead
fast and furious...

Come on, fat man!
Show yourself!

...While jamie
is more slow and steady.

One using intuition...

I'm starting to
figure out what he looks like.

...The other using ingenuity.

This doesn't look
like much right now,

But as soon as I start
stacking these blocks,

It's gonna turn into something.

But before long,

Both are taking shape...

I'd say
that's a pretty heavy guy.

I'm so in love
with this thing.

...Even if one
has been a little neater.

This is the sum total
of my scrap.

I'm just saying.

Next, jamie moves on
to adding a plumbing system...

That's how we're gonna
get the water in.

...So that his foam
figure can become big-boned.

There we go. He's plumbed,
and he's got a skeleton.

Now all I have to do
is make him look real.

Meanwhile,
Adam's got a problem.

His chubby chum is just too big.

He's a giant, and I don't
think he'll fit in the car,

So I'm gonna take
about six inches

Right out
of his center chest here.

Luckily,
a few nip and tucks later...

Much better.

...And Adam's dummy is ready

For it's own plumbing parts.

Nice.
Yeah. Isn't that cool?

That just leaves two things.

And it's a man.

"ar-rah-rah-rah-rah."

First,
a split-screen time lapse

While the full-figured foam
is finessed...

Man, they look fantastic.

...And second,
a leak-free rubber skin...

One coat down,
he is almost done.

...That'll let their
chunky creations hold water.

Over the past 10 years,

We've done
hundreds of experiments

With 44 different busters
and buster analogs.

Right at this moment
right now,

Mr. Orange here is
my flat-out all-time favorite.

And once mr. White and
agent orange are all dried up...

It's clobberin' time.

Yeah!

Keep on trucking...

Let's do this.

Here we go!

...'cause after the break,

Will the boys in blubber
save buster?

My sphincter tightened!

In hypermiling,

Tory wants one more
pre-road-tripping test.

Next, we're gonna see

About taking off
the side-view mirror of a car.

Apparently, it makes the car
so aerodynamic

That it gives you
better mileage.

And for some
quick aerodynamics,

It's off
to the n.A.S.A. Water channel.

You ready for the big show?
Yeah.

Here it goes.

Nice.

All right. So, that is
the side with the mirror,

And you can see
the drag

Where the dye
is just hanging there.

All right. I'm gonna move
to the side without the mirror.

And it flows right away.

It just goes right by.
There's no drag.

Yep. Removing a mirror
to reduce drag

Should result
in more fantastic fuel savings.

Do not try what
you are about to see at home.

We're what you call
"experts."

Want to save money
and time at the gas pump?

The Mythbusters do.

So they're joining
the hypermile club...

- Oh, oh, oh, oh.
- All right.

Shut off the engine.
Let's save some more fuel.

...To find out
if this fuel saving system

Can double the bank
from your tank.

For our hypermiling
grand finale,

We'll be driving
this 2012 sedan,

The one that we've been using
for all of our shorter runs,

But we're throwing another car
in the mix.

This one's five years older, and
it has over 75,000 miles on it.

Grant and I will
be in the brand-new car,

And Tory
will be driving this one.

Don't worry.
He won't be lonely.

Buster's
in the passenger's seat.

He's a great conversationalist.

Now, for our test,

We'll be using our same
fuel measurement system.

But we're also gonna
be measuring

The old-fashioned way,

And that is by driving
till we run out of gas.

Here we go --
exactly three gallons.

So, we're gonna be driving
one giant lap

Around the bay area,
about 150 miles.

Now, that's a good distance,

And it's gonna give us
a real-world average.

We're gonna be driving
through city streets,

Country roads, and freeways.

And to avoid traffic,

We're gonna drive
in the middle of the day,

So that way, we don't have
any extra variables

Messing up our data.

Give me those.

It's the fuel efficiency
road trip to rule them all.

They're even adding
an aerodynamic skin

And removing a side mirror

To combine
every single fuel-saving tip

For hyper-hypermiling.

All right.
Let's save some fuel.

With three gallons
of gas on board,

Drivers, start your engines.

Adios, suckers.
Let's hypermile.

It's going to be intense,

Because they've got
a hypermiling checklist

A hypermile long.

Never drive
above 45 miles per hour.

Done.

Remove the wing mirror
on the passenger door.

Done.

Avoid braking
and rapid acceleration.

Done.

Turn off engine
at stoplights.

I don't like this
at all.

Try and stay relaxed.

Green light. Green light.

Gentle.

Not turning on the a-c.
Done.

Legally drafting when
the opportunity presents itself.

Okay. I haven't had
that opportunity yet.

Overinflating our tires
by 10%.

They're at capacity.

Cover the cars
in streamline skin.

Done.

And lastly,
try to navigate intersections

So we're always going
through green lights.

I think
we're doing well.

But hold on.

Aren't we forgetting
something?

what about a control?

Well, luckily,
they did that yesterday.

It was a control cruise
of an identical route...

I forgot --
I don't speak wookiee.

I also speak klingon.

I bet you do.

Qah'ta!

...At an identical
time of day...

We can play this game.

You want to play
the silent treatment?

I can play
the silent treatment, too.

...Under identical
weather conditions...

Wow. This is a beautiful place
to conduct a science experiment.

You getting allergies?

...Driven completely normally
with no hypermiling

Until their three gallons of gas
ran out.

We're running out.
We're running out.

Well, that's it.
All right.

I think that's it, buster.
we are out.

Whoo. All right.
That's it for the control test.

We went 64 miles
and got 21.3 miles per gallon.

So, buster and I made it
78 miles

On three gallons of gas.

That is 26 miles per gallon.

That was the control,

And they'll need to
double those figures

To confirm this myth.

So, it's back
to today's hypermiling test,

And in the midst
of city traffic...

oh, shoot.

You really got to pay attention
when you're hypermiling,

Otherwise, you're gonna
off a lot of drivers.

...Fuel frugality
is frustrating.

This is it.
We are coast city.

But it's doesn't matter,

Because all this
stinkin' traffic

Is stopping and ruining
my coasting abilities.

Shh! Shh! Shh!
Calming. Calming. Calming.

maybe I should drive home.

Engine off.

However, soon, they're through
the stress of the city,

And the motors are still running
as they head out on the highway.

Oh! Is that us
causing all that traffic?

Oops.

She just gave me the bird.

Yeah, you hate us.
You hate science?

What?
You don't like science?

But while
their disciplined driving

Has other drivers road-raging,

They are making savings.

We are at -- let's see,
our mileage is 31.315.

Okay, so that is 12 miles
past our mark.

Really?!
Yeah.

Wow!
So we got 52 to go.

Okay. Whether
it's confirmed or not,

I'm sort of
impressed already.

At the 80-mile mark,

They've reached
the scenic route

And topped
their control mileage.

This is the first time
that we're seeing

Really windy roads
on this course.

Now the technique here

Is to maintain
a consistent speed

So that you don't have to
actually brake in the turns.

Because if you're braking,
you're losing energy.

But now
that there's some downhill,

I'm gonna just try to coast
through these turns

At a safe speed.

hang on, buster.

You know, hypermiling
is a commitment.

It's a way of life.

it's scary!

Or possibly a way
of death, too.

Aah!

I'm starting to get it,
hypermilers -- I'm getting it.

I understand you people now.
I didn't think I understood you.

Now I get it.

Kari's got
the fuel savings fever...

You might see actual tears
if we don't make this.

...And energy to burn.
Aah!

The only problem
is the engine doesn't.

Uh-oh.

Because despite Kari's
deft driving...

That's it.

...They're running on empty.

That's it. No brakes.

Well, we definitely did not
double our mileage.

I was getting
so optimistic.

It was looking so good.

Yeah, we didn't even come close
to doubling our mileage.

We went 64 the first time
on our control,

And we only got to
90 this time.

That's only 40%.

Yep. 40% is a long way
from 100%.

However, this myth and Tory
are still on the road.

I just hit 136
on my odometer,

Which means 20 more miles,
and this myth is confirmed!

This is insane!

Am I the only one
excited about this?!

Yeah, I guess so.

However, Tory
might have spoken too soon.

Ooh.
I'm running out of gas.

I was so close!

Aah!

I was so close.

I was just saying
how I was at 136 miles.

All I needed was 20 more miles,

And we were gonna
confirm this myth.

And as soon as I finished saying
that, the engine shut off.

I think we have to
bust this one.

I mean, it did give us
a lot more mileage,

But it's not doubling
our mileage.

So this one's looking busted.

Tory managed
an impressive 70% increase,

While Kari and Grant
scored 40%.

So, even though
the myth's busted,

It's still fuel for thought.

I started out
with pure skepticism,

Thinking that hypermiling
was just a whackadoo theory

To starting to believe it,
to starting to get into it,

To starting to work the system
and feel the gain,

To getting really emotionally
excited about the fact

That we hit a hill or a turn

So I could save
that little bit of fuel,

Just a few drops that were
gonna get us that extra mileage.

And though we did not
double our mileage,

40% is nothing to laugh at.

Welcome back.

We've been testing the sTory

That if you're
in the back seat of a car

That gets t-boned
by a truck like this one,

You're better off
being sandwiched

Between two big dudes.

So, to test this,
we did a control

In which we put
our crash test dummy

In the back seat

With nothing around him,

And we hit him
with this very truck.

Wow!

Things didn't fare so well
for him.

He died.

This patient
is very, very dead.

Now we're gonna sit him
in the back seat of a new car

Between two big dudes,

And we're gonna hit them
with this truck again.

Yep.
With two portly passengers,

This is gonna
be one super-sized finale.

Are you ready?
We're all ready.

Excellent.

Like the control, a brand-new
syndaver takes a back seat.

Come on, buddy.

We'll get him in here if it's
the last thing he ever does.

Oh, wait. It is the last thing
he ever does.

And once he's sitting
pretty in the middle...

Excellent.

...It's time
to call the cops.

Remember, right now
their chubby creations...

Time for your accident,
little buddy.

...Are lightweights,

Tipping the scales
at a mere 12 pounds each.

That's it! I got it!

But all that's about to change.

All right, buddy.
Let's get you up to weight.

To get our cops

To the required mass
and consistency

Of an obese person,

We're simply gonna fill them up
with water.

Oh, it's working
beautifully.

One gallon --
that's eight pounds.

We've got a bunch to go.

Now, based on
their overall volume,

Each guy will weigh about
350 pounds when they're full.

They're starting to get denser.

Which is right
in the ballpark we need.

All right. Dude is full of water
and up to weight.

Now it's up to jamie.

And once mr. White's
also piled on the pounds...

That's a big dude.

...Cop number two, like
the experiment, is good to go.

I don't think
there's any question here

If the prisoner's gonna
do better

With these guys
around him

Than he would by himself.

He will. Padding is good.
It works.

That's why they put airbags
in cars.

The only real question here

Is whether he will
actually survive.

Is the padding enough
to do that?

I really don't know.

Time to suit up.

Although this time
Adam's behind the wheel,

For this full-figured finale,
everything else is the same...

Let's do this.

...The same car with the
same truck going the same speed.

The only difference?
Those plus-sized passengers.

Okay, Adam.
Are you ready?

Ready.

All right.
On my mark --

3, 2, 1...Go.

Okay.

37 miles per hour.

45.

48.

You're at 50.

Hold it at 50.

Hold it right there.

All right.
Here we go!

Aah!

Wow!

Oh, my gosh!

That's just...Awful.

Whoo!

And yet, it's kind of cool.

Whoa, boy!

My sphincter tightened!

Whew.

Are you okay?

Wow, what a concussion!

Boom!

I think I screamed
for the last 30 feet.

I just went "aah!"

Aah!

Boom!

Better than a cup of coffee,
isn't it?

Wow.

That was a rush.

It may have
been a rush for Adam,

But it was savage for the car.

we have teeth
on the syndaver.

that is awful.

he's smiling.

He liked it.

And if this hit looks bad
from the outside...

Eww.

...Inside the car,
it's a disaster.

His head came off.

well, his head's come off.

That's not a good sign.

No, I mean, his head's,
like, come clean off.

It's like, no' attached
to his body.

Well, that means
we don't need no data.

still, we might as well.

Remember, jamie thought
buster might survive

Courtesy of his portly pals.

Oh, you don't look
so good.

Yet, given his decapitation,
that's not looking likely.

look.
Yeah, I know.

But what do the doctors say?

So, doc, his head fell off,
but what else is wrong with him?

In addition to his complete
dislocation of his head...

...He sustained
massive injuries

To his chest, abdomen, pelvis,
all of his extremities.

These are devastating.

Our first dummy
was certainly dead,

But this one's
even more dead.

Well, that's not at all
what we expected,

But that's
pretty definitive.

It may be, but were
the g-loads on buffered buster

Lower this time around?

All right, david.
What is the news?

What does
the data tell us?

Well, we maxed out
our sensors.

We -- what --
wait a minute.

We had, like, 500 and 600-g
crashes last time,

But what was our max?

More than 800 g's.

Wow! And we don't know
how much worse.

It's just
above 800 g's?

That's correct.
Okay.

Thank you, sir.

Whew.

So, with the g's maxing out

At eight times
the survivable limit,

There's only one conclusion
to make.

So, let's recap.

In the first crash,

Our perp was seated alone
in the back seat,

And on impact, withstood
500 to 600 g's of force,

A completely deadly amount
of g's.

In the second crash,
seated between two big cops,

This being one of them,

He withstood well over 800,
and that was totally counter

To what
both jamie and I predicted.

The second crash was far worse.

Ain't that the truth?

The two corpulent cops
didn't shield the suspect,

They killed him.

And jamie's figured out why.

Earlier, I thought any padding
would be good padding

And that our dummy
would be better off

Between the two big guys,

But it turns out I was wrong.

Water doesn't compress,
and we're mostly water.

So, it was actually

Like our dummy was between
a rock and a hard place.

How do you want to
call this one?

Well, it was totally
not what we expected.

You'd be much worse off
in the back of a car

Between two big guys

Than to not have them there
in the first place.

The myth is busted.

Copy that.
It's totally busted.

Let's get out of here.

Whoa.

Want to know why we did or
didn't do something on the show?

Log on to
discovery.com/mythbustersaftershow

To find out.