I'm sure you guys can tell I don't know squat about racing, but I've always wondered about the differences in Champ and F1 races, drivers, and cars, as they seem very similar when you watch them on TV. Take Paul Tracy for example...he seems to be the "Schumacher" of Champ car racing. How come he doesn't ever race Formula 1? Could he/his car compete? How about the other way around - could Formula 1 teams compete in Champ car races? If these are stupid questions, I apologize in advance.