NASCAR star Kasey Kahne walked away from a spectacular crash in a dirt-track race Friday night, unhurt after his sprint car somersaulted over a retaining wall in Mechanicsburg, Pa. Kahne, who lost control entering a turn into the homestretch at Williams Grove Speedway, flipped his car twice over the guardrail in the World of Outlaws race before it came to a rest in a grassy area not far from the track's grandstand. Read more: http://espn.go.com/racing/nascar/cu...ascar-kasey-kahne-ok-end-end-dirt-track-crash