I had a very...um...odd Vette. I changed it round so it doesnt suck anymore but I can describe it. It has the C5r body in red (that was a mistake on my part), F1 wheels, about 5mm of body height, near 2,500 hp, and a rear downforce of somewhere near 2 (front was 1). I wasnt TRYING to make it suck, but once you went above 40, you spun. Even if you just tapped the arrow a tiny tiny bit, you spun. And yes, traction control WAS on. And you pulled wheelies about halfway down the straight at Midfield.
Needlss to say, it doesnt exist anymore. And since I messed up chassis selection, you couldnt see the rear wheel in the back wheel hub...it was more funny than...not horrible...
EDIT: I take that back. My overpowered Viper GTS R concept was the 2,500hp car. My C5r was the 4,750hp car...