 Dale Earnhardt, Jr. was the fastest in the seventh practice session with a time of 46.295 and a speed of .Denny Hamlin was the fastest in the final practice session with a time of 44.531 and a speed of .With nine laps to go in the Alert Today Florida 300 Xfinity Series race on the day before the Daytona 500, Kyle Busch crashed into the inside retaining wall between the tri-oval and turn 1.