Algodoo

Using a self balancing spring engine, and a shit load of redution, I give you, the hastilly created but not TOOO Shabby; Uber Pushah.

It's pretty damn slow, but using a single spring with a damping of -1.500, it is very hard to stop.

I will make a shiftable version in the future that can actually get some speed, and probably with circle gears or something of the like.

A and D to switch direction, S to stop.