Sprint

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NASCAR driver Dale Earnhardt Jr. answers questions during a news conference at Sprint Cup auto racing testing at Daytona International Speedway in Daytona Beach, Fla., Friday, Jan. 10, 2014.(AP Photo/John Raoux)

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NASCAR driver Jeff Burton, right, speaks at a news conference with crew chief Steve Latarte, center, and Sam Flood, left, Executive Producer at NBC Sports during Sprint Cup auto racing testing at Daytona International Speedway in Daytona Beach, Fla., Friday, Jan. 10, 2014. Latarte and Burton will join NBC Sports in 2015.(AP Photo/John Raoux)

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NASCAR crew chief Steve Latarte answers question during a news conference at Sprint Cup auto racing testing at Daytona International Speedway in Daytona Beach, Fla., Friday, Jan. 10, 2014. Latarte will join NBC Sports in 2015 as a commentator.(AP Photo/John Raoux)

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NASCAR driver Dale Earnhardt Jr. answers questions during a news conference at Sprint Cup auto racing testing at Daytona International Speedway in Daytona Beach, Fla., Friday, Jan. 10, 2014.(AP Photo/John Raoux)

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NASCAR driver Tony Stewart answers questions at a news conference during Sprint Cup auto racing testing at Daytona International Speedway in Daytona Beach, Fla., Thursday, Jan. 9, 2014.(AP Photo/John Raoux)