I'm sure someone has posted something similar to this before, but I think it's pretty cool. On one of the mad stunt circuits some months ago. A full forward flip, caught, controlled and racing continued ... until the next ramp. Worth a quick look.

http://www.invisiblechainsaw.com/LFS/LFSStunt.wmv

Proof at last that wheels are superfluous, will there be a hovercraft in the next patch ?

haha. Yeah, that circuit has seen a many domino effect of hatchbacks testing out their rollbars.