2CV Update:
So, yeah, I pimped this bad boy up to a whopping 57BHP!! No supercharger option allowed, I'm afraid - no need for a method of dealing with exhaust gasses when your powerplant is an elastic band I guess. I slapped some racing stickies on it's feet and took it to the ring. 13minutes 23 seconds! It's not easy, tho, three times I almost drove straight off the track because I was too busy trying to claw my own eyes out my head to concentrate on the corner entrys.
On the plus side I've found a new torture device that I can sell to any unscrupulous governments who don't like waterboarding because the suicide rate is too low - the engine sound from bumper cam! Imagine being stuck in an empty oil drum, listening to Barry White being raped by a bunch of helicopters ...