Found this somewhere on the net.


American sports fans kind of pride themselves on following their own sports that no one else in the world really cares about. The people who follow soccer (as it's known over there) are generally not "Sports fans" as such (or of South American descent). Basketball and Hockey may be big in other parts of the world, but US fans don't care about anything but the NBA and NHL - the various World Cup and Olympics apperances of USA teams in these sports are mere blips on the radar compared to Super Bowls, World Series and NEXTEL Cups.

In short, the only way F1 is going to break big in the states is if it becoms unpopular in the rest of the world. That's just how it is.