Daytona International Speedway

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Scott Dixon, left, of New Zealand, and Tony Kanaan, of Brazil, signs autographs for fans prior to the start of the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014.(AP Photo/John Raoux)

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Rescue workers move driver Memo Gidley to an ambulance after he was involved in a crash at the IMSA Series Rolex 24 hour sports car race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014. (AP Photo/John Raoux)

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Driver Patrick Dempsey laughs with other drivers in the Fanzone area during an autograph session prior to the start of the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014. (AP Photo/John Raoux)

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Andy Meyrick, of England, drives the DeltaWing DWC13 down pit road before the start of the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014.(AP Photo/John Raoux)

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Christian Fittipaldi, of Brazil, drives the Action Express Racing Corvette DP to the horseshoe turn in the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014. (AP Photo/John Raoux)

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Tony Kanaan drives the Ganassi Riley DP through a turn during the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014.(AP Photo/John Raoux)

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Jim Michaelian, front right, drives the Muehiner Motorsports Porsche 911 GT in the horseshoe turn followed by a group of cars during the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014. (AP Photo/John Raoux)

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E.J. Viso, of Venezuela, drives the Starworks Riley DP during the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014.(AP Photo/John Raoux)

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Rescue workers remove Memo Gidley, center, from his Corvette DP after he was involved in a crash during the IMSA Series Rolex 24 hour auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Jan. 25, 2014. (AP Photo/David Graham)