I have a friend we like to call AJ Jimmy as he was just one of those guys who could get in about anything and win.
First time he drove a stock car he won the main feature. Won in front engine rails and even took a 120K mile 1969 GP and won the weekend drag race event.
He had his chance to help with an All Star Spint car. For helping they decided to let him go out and run hot laps in practice. He was doing real well even coming off the corners with the front wheels in the air. Then it happened.
AJ got caught in a rut and the car high sided. Due to his skill he got it back on 4 wheels and drove it back to the pits. He at that point said I am done.
He was not so worried about crashing but he did not want to pay for the wing on the top and other damage a roll would do.
I have always said if I had a car that needed a driver he would be the first one I would call.
It is not the flips but the stops like a pole that get ya.
Flips in general are pretty tame. I have seen guys flip in practice and still make the main feature.