Auto racing fan Mike Burnham of Columbia, Tenn., wears a towel on his head as he watches practice laps in the heat at Bristol Motor Speedway in Bristol, Tenn. Friday, Aug. 24, 2007. The Busch Series Food City 250 auto race will run Friday and the Nextel Cup Sharpie 500 will run Saturday, Aug. 25. (AP Photo/John Russell)