TALLADEGA, Ala. — Denny Hamlin ran 16 laps at full speed Friday, turned his car over to Brian Vickers and then didn’t exactly rule himself out of running a full race this weekend as he recovers from a back injury.

Hamlin insisted he’ll again give Vickers the car at some point Sunday at Talladega Superspeedway.

But with a sly smile, Hamlin left the door open to run a full race in his return from a compressed fracture of a vertebra in his lower back. After missing four races, he was cleared Thursday to get back in the car this weekend and said doctors gave him permission to run the entire race.

He said his intention was to “take a knee” after the start by getting out of the car during a caution and allowing Vickers to finish the race. That slightly contradicted crew chief Darian Grubb, who said earlier Friday they’d play race-day by ear and see how the race flows.

When asked about that after his practice stint, Hamlin stammered about his true plans.

“Ummm, yeah. I’d say there’s going to be a caution at some point and I’d like to get out and just ensure myself of one more week of healing,” Hamlin said.

So bet on Hamlin getting out of the car?

“Is there that bet in Vegas?” Hamlin asked.

He doesn’t particularly like Talladega, or restrictor-plate racing, for that matter. But he found himself tossing and turning Thursday night, unable to sleep because he was so anxious to get back in his firesuit, back into his race car and back onto the track.

“If it wasn’t for my crew chief, I would have ran it out of gas,” he said of his only run Friday.