INDIANAPOLIS - US stock car racer Kurt Busch escaped unharmed after a hard crash into the outer wall Monday during a practice session for Sunday's 98th Indianapolis 500. Busch is trying to become only the fourth racer to compete on the same day in two US oval classics that total 1,100 miles -- the Indy 500 and US stock car racing's Coca-Cola 600 night race. While running in a group of cars, Busch lost control coming out of turn two and slammed into the outer wall, the rear of his car erupting into flames as it spun to a rest on the infield grass. Busch climbed out of the car himself and was checked out at the track medical center and released with approval to drive once again. "I was starting to feel comfortable, and that's when I made the mistake of just letting my guard down," said Busch.–AFP