Due to the racing activities of his father Butch Leitz Inger came early with motor racing in contact. His parents, of the dangers of racing deliberately tried long her son away from this form of exercise. Only when these consented to college at Pennsylvania State University to visit, supported him Bob and Sandra Leitzinger in his racing activities. After graduating in 1991 - he left college with a degree in business management - he began to drive 1992 race.
Leitzinger had already attended a racing school as a student and had gone as an amateur sports car racing. The successes achieved there, the good relations between his father and his professional demeanor, in the early 1990s enabled him to an engagement with Dyson Racing. This partnership became one of the most successful in the U.S. sports car racing over the past two decades. Twice, in 1994 and 1997, he won the 24 - hour race at Daytona for the team. In 1999, he won, together with partner Elliot Forbes -Robinson, the title in the United States Road Racing Championship. 1999 Dyson Racing was active even in the American Le Mans Series and Leitzinger celebrated with Forbes -Robinson and Andy Wallace as a partner, his third overall victory at Daytona.
In 1997, he Leitzinger of Dyson Racing the release to go for a British team at the 24 Hours of Le Mans can. For David Price Racing Panoz Esperante he drove a GTR -1, which had to be taken after an engine failure early in the race, however. His biggest success at the Sarthe he celebrated 2000 as a works driver of Bentley; third place in the standings with the Bentley EXP Speed 8
Leitzinger was in his career with three NASCAR races (each at Watkins Glen ) at the start and was also active in 2010 in the American Le Mans Series. In 2002 he attended there for a historic victory when he won the race in Sonoma on a Dyson Lola - MG EX257 along with Weaver. It was the first overall victory for a LMP2 (then LMP675 ) car in this racing series.