Daytona 500

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Olympic gold medalist Kaitlyn Farrington shows off her medal during a news conference before the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Terry Renna)

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Speedway president Joie Chitwood, left, gives singer Luke Bryan, right, a guitar during a news conference before the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Phelan M. Ebenhack)

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Singer Aloe Blacc answers a question during a news conference before the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Phelan M. Ebenhack)

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Actor Gary Sinise poses with the winner's trophy for the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway during a news conference in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Phelan M. Ebenhack)

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Actor Chris Evans answers a question during a news conference before the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Phelan M. Ebenhack)

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Rapper 50 Cent, left, jokes with driver Cole Whitt, right, during a new conference before practice for Sunday's NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 22, 2014. (AP Photo/Terry Renna)

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Rapper 50 Cent answers a question during a new conference before practice for Sunday's NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 22, 2014. (AP Photo/Terry Renna)