Me - Country Roads

I apologise.

Magnolia - Wise Up

Not moving, but they're in a car. Singing. So I'm going to allow it.

A Wet Hot American Summer - Danny's Song

Another sing and crash, real people this time.

Silence of the Lambs - American Girl

Classic car singing action & it's more Tom Petty folks

Almost Famous - TIny Dancer

Great Film, Great Song

Paradise, Hawaiian Style - It's a Dogs Life & Datin'

Don't say I never do anything for you. Not 1, but 2 clips of Elvis singing WHILST FLYING A FREAKIN' HELICOPTER. Is there nothing this man couldn't do?

White Chicks - A Thousand Miles / Realest Niggas

Now I'm not here to judge but this does not look like a good film. However, they're singing in a car, so in they go!

Pulp Fiction - Flowers on the Wall

Captain Kangaroo!

Planes Trains & Automobiles - 3 Coins in a fountain

OK, so it's not a car, but they're singing this time

Family Guy - End of the world as we know it

Another animated sing and crash.

Madness - Driving in my Car

The Muppets - Moving Right Along

The Simpsons - Simpson, Homer Simpson

and as a bonus, the same clip (reversed for some reason) in Italian

Wayne's World - Bohemian Rhapsody

Planes Trains & Automobiles - Doin' The Mess Around

OK, so he doesn't actually sing along, but I don't care

Step Brothers - Sweet Child of Mine

American Beauty - Don't Rain on my Parade

Office Space - No Tears

Jerry Maguire - Free Fallin'

I like this one as it's pretty much how I sing along to Free Falling, one of the best sing-along songs I know