Photos: Daytona 500 speed week
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Credit: Getty Images
DAYTONA BEACH, FL - FEBRUARY 22: Jeff Burton, driver of the #31 Caterpillar Chevrolet, puts his helmet on in his car during practice for the NASCAR Sprint Cup Series Daytona 500 at Daytona International Speedway on February 22, 2012 in Daytona Beach, Florida. (Photo by Chris Graythen/Getty Images)
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