Part three of the 15-part feature series ‘How Roger Penske Changed The Indy 500,’ which celebrates the most successful entrant at the Indianapolis Motor Speedway on the 50th anniversary of his first which took place in 1969, features the irascible Bobby Unser.

Starting in 1979, Uncle Bobby won the better part of a dozen races during his three-year stint driving for Team Penske. Controversy also shadowed his time with The Captain as hiding his setup info, warring with teammates, and cheating the ‘Pacer Light’ system – that eventually led to being awarded the 1981 Indy 500 win, after a long and expensive battle among lawyers and arbitrators – fueled a brief and explosive relationship in Penske’s collective.

At 85, Unser has a free pass to curse and cajole all he wants. And here, it’s an urging to beware: if your ears are sensitive to the unholiest of words and creative ways to describe fornication, this audio episode is one to skip, with haste.