Algodoo

This is a result of me messing around in Phun, and getting an interesting idea. Why do the wheels in tank chassis always have to move? I whipped this new suspension design up in about twenty minutes, and it's nowhere near perfect, but I thought it was clever, and invite you pros to expand upon the basic concept.
Right and left drive the chassis, down brakes. There is a mountain to the right of the starting position.