NASCAR heads to Talladega Superspeedway this Sunday for the GEICO 500.

FOX's Marghiee Teshineh with "FOX In The Fast Lane":

Tony Stewart, cleared to race again after a back injury, ran a full race at Richmond, but at Talladega this weekend on the advise of doctors will not complete the whole race to avoid re-injuring his back:

(Stewart) "It's the right thing to do, it's the smart thing to do and it's the only way the doctors were going to let me do it in the first place. So I made them meet me in the middle, and at least let me start the race so I can get points."

Stewart will be handing the car over to Ty Dillon and says:

(Stewart) "He's excited and understands me starting the race, so hopefully we'll get a caution early in that thing so we can get him in there and let him run his race."

The crew chief for Ricky Stenhouse Jr. is suspended for this weekend's race at Talladega. Nick Sandler, who is already on probation for the rest of the season, was fined $20,000 for a technical violation found during an inspection at Richmond.

And in a policy change meant to improve driver safety, NASCAR is now requiring that all five lug nuts be fastened to the wheels of cars.

I'm Marghiee Teshineh, FOX News.