Although these are just 12 inch models, the concept is still pretty cool. The BAAL & Hyanide All-Terrain bikes were created for the Michelin Challenge Design 2006 by Tilmann Schlootz and Oliver Keller. The key feature of these off road bikes is the bendable rubber track which allows for maximum grip and traction and enables these bikes to climb any terrain. The rubber track also is able to pivot which creates extreme maneuverability. Both concepts use a frame that is very open ended and allows for numerous types engines to be used including fuel cell engines.