NASCAR's have to be production MID SIZE cars. Such as the Chevy Lumina, Ford Taurus, Dodge Intrepid. Otherwise they would be racing Vetts, Crustangs and Viper....
But it is definietly a cool thought. Maybe as a pace car... "and the pace car is heading to pit row..or..wait a minute, he's making a move on the leader in turn #4!!!.."