Washington (CNN) As grand marshal for the Daytona 500 on Sunday, President Donald Trump is set to kick off NASCAR's biggest race by saying, "drivers, start your engines."

The President is also expected to make remarks before the race at the Daytona International Speedway in Florida, a source familiar told CNN. The move adds to his growing list of appearances at professional sports events over the last few months.

"Daytona International Speedway has been privileged to have hosted several sitting Presidents of the United States over our history," Daytona International Speedway President Chip Wile said in a statement on Thursday. "We're honored that the President of the United States has chosen to experience the pageantry and excitement of 'The Great American Race' by attending Sunday's 62nd annual DAYTONA 500."

Discussions are still underway about what exactly the President will do Sunday at the event, two sources familiar with the planning told CNN. One source confirmed there is a possibility Trump and part of his motorcade will take a lap on the flat part of the inner edge of the racetrack.

Race organizers, the White House and the Secret Service are still discussing whether the ride will happen. Fox News was the first media outlet to report on the possible lap.

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