So I whipped up a few lofted and swept profiles and created this model.
|Co2 Car body Design|
But What about mass? isn't that the most important parameter? Well if you look at the bottom of the car, you will notices that behind the front wheels the main portion of the body is hollow. I didn't spend as much time reducing weigh as possible, but I didn't do any stress analysis to determine how thin I could go, so the design is a bit sub par in that aspect.
However the point is that this is for fun, and I'm having fun with it up to this point.