I too experienced this at Texas Motor Speedway. I would do it again in a heartbeat! Went 10 laps and my arms were like jell-o I tell ya! It was harder than I thought it would be. I don't see how those guys can drive that fast, that close to other cars, for that long. I have never really liked NASCAR prior to that, and still I'm not crazy about it, but I have a whole new respect for the drivers.