Sprint Cup driver, Mark Martin, speaks to the media prior to the STP 500 Sprint Cup series auto race at Martinsville Speedway in Martinsville, Va., Sunday April 7, 2013. Martin will drive car 11 for the injured Denny Hamlin. (AP Photo/Steve Helber)

Associated Press
Sprint Cup driver, Mark Martin, speaks to the media prior to the STP 500 Sprint Cup  series auto race at Martinsville Speedway in Martinsville, Va., Sunday April 7, 2013.  Martin will drive car 11 for the injured Denny Hamlin. (AP Photo/Steve Helber)
Sprint Cup driver, Mark Martin, speaks to the media prior to the STP 500 Sprint Cup series auto race at Martinsville Speedway in Martinsville, Va., Sunday April 7, 2013. Martin will drive car 11 for the injured Denny Hamlin. (AP Photo/Steve Helber)
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