Coca-Cola 600

Drivers compete in the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina.

Coca-Cola 600

CONCORD, NC - MAY 27: Kasey Kahne, driver of the #5 Quaker State Chevrolet, takes the checkered flag as he crosses the finish line to win the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Streeter Lecka/Getty Images)

Coca-Cola 600

CONCORD, NC - MAY 27: AJ Allmendinger, driver of the #22 Shell/Pennzoil Dodge, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by John Harrelson/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Martin Truex Jr., driver of the #56 NAPA Auto Parts Toyota, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Jared C. Tilton/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Juan Pablo Montoya, driver of the #42 Target Chevrolet, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Jared C. Tilton/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Casey Mears, driver of the #13 GEICO Ford, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Jared C. Tilton/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Clint Bowyer, driver of the #15 5-hour Energy Toyota, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Jared C. Tilton/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Tony Stewart, driver of the #14 Office Depot/Mobil 1 Chevrolet, and Jamie McMurray, driver of the #1 Bass Pro Shops/Arctic Cat Chevrolet, race through the tri-oval during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Jared C. Tilton/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: A B-52 flies over a giant American flag held in the infield during the national anthem prior to the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by Chris Graythen/Getty Images)

Coca-Cola 600

CONCORD, NC - MAY 27: Kyle Busch, driver of the #18 M&M's Red, White & Blue Toyota, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by John Harrelson/Getty Images for NASCAR)

Coca-Cola 600

CONCORD, NC - MAY 27: Matt Kenseth, driver of the #17 Fastenal Ford, pits during the NASCAR Sprint Cup Series Coca-Cola 600 at Charlotte Motor Speedway on May 27, 2012 in Concord, North Carolina. (Photo by John Harrelson/Getty Images for NASCAR)