Kasey Kahne waits by his car during a NASCAR Sprint Cup series auto race practice at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Mike McCarn)
Jimmie Johnson talks to a crew member before a NASCAR Sprint Cup series auto race practice at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Chuck Burton)
Dale Earnhardt Jr. reaches for his helmet before a NASCAR Sprint Cup series auto race practice at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Mike McCarn)
Jeff Gordon waits by his car before a NASCAR Sprint Cup series auto race practice at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Mike McCarn)
Ryan Newman's crew works on his car during a pit stop in the NASCAR Sprint Cup auto race at Darlington Speedway in Darlington, S.C., Saturday, April 12, 2014. (AP Photo/Chuck Burton)
Joey Logano (22) races Jeff Gordon (24) during the NASCAR Sprint Cup auto race at Darlington Speedway in Darlington, S.C., Saturday, April 12, 2014. (AP Photo/Chuck Burton)
The field takes the green flag to start the NASCAR Sprint Cup auto race at Darlington Speedway in Darlington, S.C., Saturday, April 12, 2014. (AP Photo/Chuck Burton)
Chase Elliott raises the trophy in Victory lane after winning a NASCAR Nationwide series auto race at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Chuck Burton)
Matt Kenseth looks at his race car as his crew works during a NASCAR Sprint Cup series auto race practice at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Mike McCarn)
Chase Elliott (9) leads Kyle Busch (54) during a NASCAR Nationwide series auto race at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Chuck Burton)
Chase Elliott celebrates in Victory lane after winning a NASCAR Nationwide series auto race at Darlington Speedway in Darlington, S.C., Friday, April 11, 2014. (AP Photo/Chuck Burton)