BRISTOL, Tenn. — Trevor Bayne is excited about being at his “home” track at Bristol Motor Speedway this weekend. But if you really want to see the Knoxville native get excited, all you need to do is ask about his younger brother starting his racing career. Trey Bayne, the 14-year-old brother of Trevor, made his debut in a Late Model Stock car at Kingsport Speedway a couple of weeks ago.