The teams features four WNBA stars: Stefanie Dolson, Allisha Gray, Kelsey Plum and Jackie Young.

Approximately 90 cars will navigate the treacherous corners of logging roads near Sunday River during the 30th annual auto race.

Phelps said Biles' bowing out of the competition was the kind of "eye-opening experience" that could turn into a major positive by bringing greater awareness of mental health issues.