The "Triple Crown" is earned in USAC racing when a driver claims all three national championships (Silver Crown, Sprint Car, and Midget Car). Only two drivers, Tony Stewart (1995) and J.J. Yeley (2003), have achieved the triple crown in a single season. Three other drivers, Pancho Carter (1972–78), Dave Darland (1997–2001), and Jerry Coons, Jr. (2006–08), have claimed each of the three championships at least once in their careers. In 2012 Mike Curb and Cary Agajanian became the only car owners to win the Triple Crown by winning all three championships in the same year.