The Latest: Johnson hopes to run Boston Marathon in 3 hours

Ryan Newman answers questions during an interview at NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Corey LaJoie listens to a question from a reporter during NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Jimmie Johnson answers questions during an interview at NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Casey Mears holds up a hat from his new sponsor Rim Ryderz at NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. Rim Ryderz makes wheel rims for skateboards. (AP Photo/John Raoux)

Austin Dillon, center, talks with reporters during the NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Kyle Larson answers questions during an interview at NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Ryan Blaney speaks to reporters during the NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Kyle Busch, left, gives an autograph before qualifying for the NASCAR Daytona 500 auto race at Daytona International Speedway, Sunday, Feb. 10, 2019, in Daytona Beach, Fla. (AP Photo/Terry Renna)

Joey Logano answers questions during a NASCAR Daytona 500 auto racing media day interview at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)

Denny Hamlin answers questions during NASCAR Daytona 500 auto racing media day at Daytona International Speedway, Wednesday, Feb. 13, 2019, in Daytona Beach, Fla. (AP Photo/John Raoux)