Kyle Larson switched to a backup car after being involved in a crash during Daytona 500 practice Wednesday. Larson was involved in a multi-car accident in the second practice session, a pileup that occurred after Ty Dillion cracked an oil cooler between Turns 1 and 2 at Daytona International Speedway. Dillon spewed oil on the track and on other drivers' windshields, and as cars behind him tried to slow, two-time Daytona 500 champion Michael Waltrip ran into the back of Ryan Newman. More...