Michael Curtis Waltrip (born April 30, 1963) is a professional race car driver, co-owner of Michael Waltrip Racing, racing commentator, and published author. He is the younger brother of three-time NASCAR champion and racing commentator Darrell Waltrip. Waltrip is a two-time winner of the Daytona 500; having won the race in 2001 and 2003. He is also a pre-race analyst for NASCAR on FOX. He was the interim driver in the #55 Toyota Camry in the NASCAR Sprint Cup Series. He was filling in for Brian Vickers who was out for heart surgery, Brett Moffitt took over at Atlanta. He also competed in the 2011 edition of 24 Hours of Le Mans.