I'll state my final thoughts on the subject. Many Nascar drivers might, indeed be great drivers. Certainly Tony Stewart, Robby Gordon, Allmendinger, Sam Hornish and others have shown promise in open wheeled road-racing cars. My point is that the Nascar platform (the cars) can't showcase driver skills that approach F1 levels. As you know, current F1 cars test the driver to the limits. There is always "more car" if you're skilled enough to use it. The Nascar cars, IMO, can be mastered by literally any of the current series drivers.