Kasey Kahne, driver of the No. 5 Great Clips Chevrolet, celebrates in Victory Lane after winning the NASCAR Sprint Cup Series Food City 500 at Bristol Motor Speedway.

Joey Logano, driver of the No. 22 Shell-Pennzoil Ford, is held back by a member of his crew after an altercation with Denny Hamlin (not pictured). Logano took offense to a bump from Hamlin earlier in the race.

The altercation between Joey Logano and Denny Hamlin spills over to their crew members, who had a brief scuffle around Hamlin's care before being separated.

Kasey Kahne celebrates with a burnout after winning the NASCAR Sprint Cup Series Food City 500 at Bristol Motor Speedway.

Kasey Kahne takes the checkered flag to win the NASCAR Sprint Cup Food City 500 at Bristol Motor Speedway.

Tony Stewart, driver of the No. 14 Bass Pro Shops/Mobil 1 Chevrolet, faces the wrong way after being spun out at Bristol.

Aric Almirola, driver of the No. 43 Smithfield Ford, looks on inside his damaged car after being spun out in Bristol.

From a side angle, it's clear how much damage Aric Almirola's car took after being spun out.

Danica Patrick pulls into the pits in her bright green No. 10 GoDaddy car. The car color seemed appropriate for St. Patrick's Day, but Patrick didn't have the luck of the Irish.

Matt Kenseth drives his wrecked No. 20 Home Depot/Husky Toyota after an incident. Kensth could barely see with his hood blown up and covering his windshield.

Tony Stewart cut his tire down and then could not get to pit road. He spun in Turn 1 with the flat left rear to bring out the first caution of the day.

Kyle Busch (left) and Kasey Kahne (right) lead the field to start the Food City 500 at Bristol Motor Speedway.

Drivers and fans enjoy a great day for racing during the Food City 500 at Bristol Motor Speedway.

BRISTOL, TN - MARCH 17: Kyle Busch, driver of the #18 M&M's Toyota, and Kasey Kahne, driver of the #5 Great Clips Chevrolet, lead the field to the green flag to start the NASCAR Sprint Cup Food City 500 at Bristol Motor Speedway on March 17, 2013 in Bristol, Tennessee. (Photo by Gary Eller - Pool/Getty Images)

BRISTOL, TN - MARCH 17: Singer/musician Charlie Daniels performs during the NASCAR Sprint Cup Food City 500 at Bristol Motor Speedway on March 17, 2013 in Bristol, Tennessee. (Photo by Sean Gardner/NASCAR via Getty Images)

NASCAR Sprint Cup Series driver Danica Patrick, left, signs a football for Tennessee head football coach Butch Jones and his son Alex Jones before the Food City 500 auto race, Sunday, March 17, 2013, in Bristol, Tenn. (AP Photo/Wade Payne)

Kyle Busch celebrates his victory in the NASCAR Nationwide Series Jeff Foxworthy's Grit Chips 300 at Bristol Motor Speedway. It was Busch's fifth Nationwide Series win at the track.

Kyle Busch stands next to his Nationwide Series car after taking the win at Bristol on Saturday. Busch held off a stellar charge from rookie Kyle Larson to take the victory.

Kyle Busch took the lead late and held off all challengers in the end at Bristol. Busch's good fortune could continue - he starts from the pole position in Sunday's Sprint Cup race.

Cars seem to fly around Bristol Motor Speedway during Saturday's race.

Austin Dillon pits his Richard Childress Racing Chevrolet on Saturday. He went on to finish 11th in the race .

Crews work to safeguard drivers Nelson Piquet Jr. in the No. 30 Worx Chevrolet and Jamie Dick in the No. 55 Viva Auto Group Chevrolet after a crash on Lap 105 of the NASCAR Nationwide Series Jeff Foxworthy's Grit Chips 300 on Saturday at Bristol Motor Speedway.

Nelson Piquet Jr., driver of the No. 30 Worx Chevrolet, slammed into Jamie Dick in the No. 55 Viva Auto Group Chevrolet on Lap 105 of Saturday's Nationwide Series race at Bristol Motor Speedway.

Brad Sweet, driver of the No. 5 Great Clips Chevrolet, spins out after an incident during Saturday's Nationwide Series Jeff Foxworthy's Grit Chips 300 at Bristol Motor Speedway.

Chris Buescher, driver of the No. 16 Ford EcoBoost Ford, leads a group of cars during Saturday's Nationwide Series race.

Drivers and crew members stand on the grid before the NASCAR Nationwide Series Jeff Foxworthy's Grit Chips 300 on Saturday at Bristol Motor Speedway.

Brad Sweet's car is towed to the pit area after a collision during the final practice Friday for the NASCAR Nationwide Series race at Bristol (Tenn.) Motor Speedway.

Kyle Busch, driver of the No. 18 M&M's Toyota, poses in Victory Lane after setting the track record while winning the pole position Friday for the NASCAR Sprint Cup Series Food City 500 at Bristol.

Generation 6 cars are lined up along pit road before Friday's qualifying for the NASCAR Sprint Cup Series Food City 500 at Bristol Motor Speedway.

Clint Bowyer, driver of the No. 15 NAPA Filters Toyota, walks with Juan Pablo Montoya, driver of the No. 42 Target/Mountain Dew Chevrolet, during Friday's Sprint Cup qualifying at Bristol.

Nationwide Series drivers Jeremy Clements (left) and Robert Richardson Jr. talk during practice Friday for the Jeff Foxworthy's Grit Chips 300 at Bristol.

Kyle Busch, driver of the No. 54 Monster Energy Toyota, practices Friday for the NASCAR Nationwide Series Jeff Foxworthy's Grit Chips 300 at Bristol.

Kyle Busch and a ready assistant attach the pole-winner sticker to his No. 18 M&M's Toyota after Friday's Sprint Cup qualifying at Bristol.

Jeffrey Earnhardt sits in his car during practice for the NASCAR Nationwide Series Jeff Foxworthy's Grit Chips 300 at Bristol Motor Speedway on Friday.

Crews work on cars during practice for the NASCAR Sprint Cup Series Food City 500 at Bristol Motor Speedway on Friday. The short track does not have a garage area, so teams work on the cars on pit road.

NASCAR Sprint Cup Series driver Jimmie Johnson stands on the wall as he watches practice as his crew works on his car.

Denny Hamlin runs high on the banking during practice at Bristol Motor Speedway.

The cars of NASCAR Nationwide Series drivers Brad Sweet (5) and Joey Gase (52) sit on the backstretch after colliding during practice for the Jeff Foxworthy's Grit Chips 300 on Friday. Both drivers were OK after the incident, but Gase did not have a backup car at the track, so his effort was ended early.