Photos: NASCAR at Auto Club Speedway, Sunday March 18, 2018

FONTANA, CA – MARCH 18: Martin Truex Jr., driver of the #78 Bass Pro Shops/5-hour ENERGY Toyota, takes the checkered flag to win the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Jonathan Ferrey/Getty Images)

FONTANA, CA – MARCH 18: Martin Truex Jr., driver of the #78 Bass Pro Shops/5-hour ENERGY Toyota, leads the field to green to start the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Jonathan Ferrey/Getty Images)

FONTANA, CA – MARCH 18: Actor Ian Somerhalder poses for a photo by the pace car prior to the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Jonathan Moore/Getty Images)

FONTANA, CA – MARCH 18: Jimmie Johnson, driver of the #48 Lowe’s for Pros Chevrolet, pits during the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Sarah Crabill/Getty Images)

during the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California.

FONTANA, CA – MARCH 18: Martin Truex Jr., driver of the #78 Bass Pro Shops/5-hour ENERGY Toyota, celebrates with a burnout after winning the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Robert Laberge/Getty Images)

FONTANA, CA – MARCH 18: Martin Truex Jr., driver of the #78 Bass Pro Shops/5-hour ENERGY Toyota, places the winner’s decal on his car after winning the Monster Energy NASCAR Cup Series Auto Club 400 at Auto Club Speedway on March 18, 2018 in Fontana, California. (Photo by Sarah Crabill/Getty Images)

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Photos: NASCAR at Auto Club Speedway, Sunday March 18, 2018