A.J. Allmendinger opens up on inner doubts as he reaches 500th NASCAR Cup start

Motorsport photoThere is no driver in the Cup garage with a career trajectory quite like A.J. Allmendinger. And that's just looking at the NASCAR side of it, without including how he had a five-win season in CART, won the Rolex 24 Hours at Daytona overall in 2012 after an epic battle, or the fact that he nearly won the Indy 500 in his one and only start.Allmendinger's NASCAR Cup career has been interrupted multiple times over the years, but at 44, he's still here, and still competing a