Whitt won the Rookie of the Year title in NASCAR's Southwest Touring division in 2002 while attending college, and made his
Craftsman Truck Series debut in 2003, driving the No. 38
Chevrolet Silverado for
Clean Line Motorsports, a team his father owned. He finished thirteenth in his debut, and ran six additional races that season, his best finish a thirteenth at
California Speedway. In
2004, Whitt and his team ran the Truck Series full-time with sponsorship from McMillin Homes and running
Ford F-150s. Despite not finishing any race higher than 12th in his rookie season, Whitt finished 19th in the final standings. During the
2005 season, Whitt's team was purchased by
Jeff Hammond and Tom DeLoach, renamed
Red Horse Racing and switched to
Toyota. He won his first race at
Memphis Motorsports Park (from the pole) after taking the lead from a spinning
Ron Hornaday Jr. on the last lap. He was dismissed from the team at the end of the season, leaving him out of a ride. However, Whitt soon signed with
ARCA Racing Series team CLR Racing. In 2006, he attempted his first
NEXTEL Cup race at
Phoenix International Raceway with
CJM Racing and qualified 37th, but finished 43rd. He was scheduled to run with CJM for twelve races in
2007, but those plans changed when Whitt was released from the ride. Whitt drove one race later that season for Red Horse at Atlanta, where he finished twenty-third. Midway through 2008, Whitt signed to drive for
Specialty Racing in the Nationwide Series. On June 22, 2009, Whitt announced that he has left Specialty Racing and the No. 61 team. He has not raced since. ==Motorsports career results==