Algodoo

This will never be implemented, as it would be extremely slow (especially since Algodoo only uses 1 thread, which means it doesn't really support the dualcores and quadcores we have now (like my dualcore on my computer won't work with it)). Someone else on Algobox (forgot his name) made this rotating cube (really a rectangular prism) with a thruster, which inspired this. Water goes behind all geometries (regardless whether it is behind or not) so water works, it's just behind everything. Front is Collision Layer A, back is collision layer B. Adjust spring length to change z depth. If it works in Phun (as it has no thrusters, lasers or anything else not in Phun) then it's Collision Group. 5 big cubes and 1 small cube. Also includes 2 cylinders. 2 cubes and 2 cylinders made the car.