"dirt bike" + "snowmobile" + "four-wheeler"

This is one is the most intriguing concepts to appear recently:
"The Hyanide" is an amazing hybrid vehicle created by German designers Oliver Keller and Tillman Schlootz for the 2006 Michelin Challenge Design. It moves on a segmented tread (more as a caterpillar than anything you've seen so far), which spans the whole length of a vehicle. To drive it, you would steer with your hands and feet, and it would flex in the right direction... It would have the ultimate traction: if any of it's drivetrain touches the ground (no matter how rough it is), it will move.
Read CNN article about it.


Graphics by Peter Bollinger

More pictures and info here
and here


Image courtesy Tilmann Schlootz & Oliver Keller/ Michelin Challenge Design

Slightly different version submitted for the same design competition is a "Baal"; see it here