Regan Smith has started what will be a busy day at Daytona International Speedway.

Just hours after being named the replacement for suspended Stewart-Haas Racing driver Kurt Busch, Smith was getting fitted for the seat and trying to get up to speed with the team. He was one of the first drivers on track for the final practice before the Daytona 500.

Smith also is driving in the Xfinity season opener later in the day.

Busch was suspended indefinitely Friday after a judge said the 2004 Cup champion almost surely choked and beat a former girlfriend last fall. The suspension came two days before the Daytona 500, prompting Chevrolet to cut ties with Busch and leading Stewart-Haas to switch to Smith.

Busch has appealed, and the hearing begins Saturday at noon at NASCAR headquarters.

Regardless of the outcome, SHR plans to stick with Smith for the "Great American Race."