From what he believed to be an attack by armed assailants in a shanty town near São Paulo, where he was preparing for Sunday's Brazilian Grand Prix, reigning Formula One champ Jenson Button. Last Saturday, Button, 30, was traveling in the district of Interlagos with his father, manager, a trainer and a driver when a man carrying what appeared to be a baseball bat and six other men with machine guns approached their bulletproof Mercedes, which had been stuck in slow traffic. Button's driver was able to maneuver the vehicle to safety, mashing a number of cars in the process. No shots were reported to have been fired, and no one was injured. Button, who'd been instructed to travel in the armored car because of previous attacks on F1 racers leading up to the race, finished fifth on Sunday.