NASCAR Charlotte Auto Racing

October 15, 2012 - 12:34 PM
In this pool photo provided by HHP Images, fireworks explode as Mark Martin (55) and Greg Biffle (16) lead the field to the green flag for the start of the NASCAR Bank of America 500 Sprint Cup series auto race in Concord, N.C., Saturday, Oct. 13, 2012. (AP Photo/Harold Hinson, Pool)