U.S.

Associated Press
An emergency official ushers fans away from driver Kyle Larson's engine as it burns behind the wall and safety fence that he hit along the front grandstands on the final lap of the NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 23, 2013. (AP Photo/Phelan M. Ebenhack)

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