It's race day at New Hampshire International Speedway, and Lisa Adjutant, a gregarious 36-year-old with nose and lip piercings, plants a wet one on a picture she sketched of Nextel Cup driver Jamie McMurray. It's taped to the inside door of her cramped motor home, and it's the last thing she sees before walking to the track to join 100,000 screaming fans who have gathered for a high dose of speed. But Adjutant's fanaticism for her spiky-haired idol, the driver of car No. 26, doesn't end with drawing his image. ''Jamie McMurray,'' the girl replies without hesitation. Adjutant laughs. ''She's...