F1 cars on oval tracks?

Does anyone know of any videos or statistics of a Formula one car lapping a nascar style oval track. My redneck friend is naively confident that a Nextel Cup car could lap a nascar track faster than a Formula 1 car. I know that he is absolutely retarded but I'd really like some solid evidence that he is wrong. I've already pointed out to him that the exit speed of F1 cars on "turn 1" of the Indy circuit is about 180mph but that doesn't seem to be enough for him.