Highly Unconventional Vehicle

 is a song from the episode "Where's Perry? Part 1".

Lyrics
Phineas: We need a cheetah's muscle so we can hustle

And a couple big gorilla hands.

Buford: For climbing!

Phineas: Hope your seatbelt's fastened, 'cause the motor's been fashioned

after baboon adrenal glands.

We got a rhino's horn in case we run into trouble,

A big giraffe neck so our reach can double,

The tail was gonna be a snake, I'm glad we used pencil

'Cause a monkey's tail will give us something more prehensile...

It's a highly unconventional vehicle,

It doesn't have wheels or a carburetor,

It doesn't have a windshield, it doesn't have wings,

It doesn't have a heater, but we're at the equator,

So I guess that's not so admirable

'Cause it wouldn't need a heater even if it wasn't such a...

Highly unconventional vehicle (highly unconventional vehicle),

It's a highly unconventional vehicle (highly unconventional vehicle),

It's a highly unconventional vehicle!

Yeah!

Trivia

 * The boy's "vehicle" is similar to that of a Chimera, an ancient creature whose body was composed of several animal parts, including a tail with a snake's head (which was almost put on the machine until they decided on the monkey tail).