Martin Lee Truex Jr. (born June 29, 1980) is a NASCAR Sprint Cup Series driver. He currently drives the #56 NAPA Auto Parts Toyota Camry for Michael Waltrip Racing. Truex won the Nationwide Series Championship in 2004 and 2005. Truex is a graduate Southern Regional High School. Martin's younger brother, Ryan races in the NASCAR K&N Pro Series East division while his cousin Curtis races late models for JR Motorsports.