At 4+ miles its is one of the longest tracks in the US, and with 2 long straights (one with a small Kink), also the highest average speeds. Truly a spectacle as you can get down right next to the fence in many places. I bring my mountain bike and hit several good areas during the day of racing, its such a huge track that walking is not a option if you want to cover ground. But the crowds are small and friendly, and June in the Wisconsin countryside is scenic as it gets. They have a new karting track that is supposedly killer for super motards, its sponsored by Briggs and Stratton. Everyone in the area should make it there once, just to see it. Standing trackside (at the Kink) as the superbikes go by at 200mph 10 feet from your face is something you don't forget soon!
Perhaps it was the result of anxiety?