Kyle Larson (32) goes airborne before catching the fencing in a wreck including Dale Earnhardt Jr. (88), Parker Kligerman (77), Justin Allgaier (31) and Brian Scott (2) during the final lap of the NASCAR Nationwide Series auto race at Daytona International Speedway, Saturday, Feb. 23, 2013, in Daytona Beach, Fla. (AP Photo/John Moore)

Kyle Larson's car is on fire as he slides down the track with Regan Smith after being involved in a crash at the conclusion of the NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla. Larson's car hit the safety fence sending car parts and other debris flying into the stands injuring spectators. (AP Photo/Chris O'Meara)

Kyle Larson (32) goes airborne into the catch fence in a multi-car crash including Dale Earnhardt Jr. (88), Parker Kligerman (77), Justin Allgaier (31) and Brian Scott (2) at Daytona International Speedway, Saturday, Feb. 23, 2013, in Daytona Beach, Fla. (AP Photo/John Raoux)

Brad Keselowski (22) and Kyle Larson (32) slide down the front stretch after they were involved in a mulit-car crash on the final lap of the NASCAR Nationwide Series auto race. (AP Photo/John Raoux)

Pieces of Kyle Larson's car fly through the air as he slide down the front stretch after he was involved in a multi-car crash on the final lap. (AP Photo/John Raoux)

Spectators are injured after a tire and engine off Kyle Larson's car flew into the stands during a crash at the conclusion of the NASCAR Nationwide Series auto race. (AP Photo/David Graham)

Injured spectators during a crash at the conclusion of the NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla. (AP Photo/David Graham)

A wheel, tire and suspension parts sit in the stands after crash at Daytona International Speedway in Daytona Beach, Fla. Several fans were injured when large chunks of debris sailed into the grandstands after a car flew into the fence. (AP Photo/David Graham)

Injured spectators are treated after Kyle Larson's car hit the safety fence sending car parts and other debris flying into the stands. (AP Photo/David Graham)