Pruett started racing go karts at the age of eight and went on to win ten professional karting championships. In the 80's, he established himself as a top American sports car racer, eventually winning two IMSA GTO Championships and three Trans Am Championships. During his racing career, Pruett has worked with performance scientist and consultant Dr. Jacques Dallare, on physical and mental testing and to improve conditioning. Pruett also worked for several years as a commentator for Champ Car races on Speed Channel.