With Cars and now Talladega Nights, this has been a hot summer for our great American car culture. Once the exhaust clears from those hits, you might be able to make out Driving Force. This modest reality show follows the life of drag racer John Force, his estranged wife, Laurie, and daughters Ashley, Brittany and Courtney. Force is likably irascible and uncouth, not bothering to turn away from the camera while he wipes beer off the seat of his pants. The women, all with long hair in complementing shades, sometimes seem to cluster against him, like defensive horses, but the overall tone is playful. Not great but no drag.