German designers Oliver Keller and Tillman Schlootz designed this concept vehicle called Hyanide for the 2006 Michelin Challenge Design:
Named for its supposed resemblance to a crouching hyena, the Hyanide is designed to run on a flexible rubber tread that spans the machine’s entire underside. So if any part of the bottom is touching the ground, the Hyanide should be able to move, no matter how deep the quagmire, no matter how rough the terrain. The tank-like tread consists of 77 identical segments—each made from hard plastic covered with tire rubber —held together by Kevlar rope. Each segment flexes independently, making the tread significantly more limber than if its components were rigid. Not only does this setup help with traction, but it would allow the tank- cum-motorcycle to corner like no other vehicle.