Algodoo

well, almost perfect!

watch as the suspension equipped vehicle overtakes the non suspension vehicle (above yours)

just hold right, but press left if you want or down to brake.

uses a "PWAPWAP" (piston within a piston within a piston) style suspension, giving it the ability to soak up more major shocks, and extend wheels further down to support its self even when going over holes in the surface!

p.s if you can tell me what "it" is then i will tell you more about my current big project (GOW has been put on hold)