Engine trouble for Stewart, Patrick in practice

Driver Danica Patrick stands by her car as her crew makes adjustment during a practice for the NASCAR Daytona 500 auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 15, 2014. (AP Photo/John Raoux)

Driver Danica Patrick stands by her car as her crew makes adjustment during a practice for the NASCARDaytona 500 auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 15, 2014. (AP Photo/John Raoux)

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