Earnhardt's proficiency as a car owner continued. His race team outside of DEI, JR Motorsports, in 2005 fielded a car in the USAR Hooters ProCup Series, winning once and qualifying for the Four Champions playoff. Mark McFarland moved to the Busch Series in 2006, driving the No. 88 JR Motorsports US Navy Chevrolet, with Richard Childress Racing providing assistance; however, he was fired before the fall Michigan race, the Carfax 250. He was replaced by Robby Gordon and Martin Truex Jr. for the rest of the year. Long-time short track racer Shane Huffman drove Earnhardt's USAR Hooters ProCup car in 2006. In 2006, during the spring weekend at Talladega Superspeedway, Earnhardt and other DEI drivers drove with special black paint schemes on their cars, reminiscent of his late father's famous No. 3 paint scheme. On Father's Day in 2006, he drove a vintage Budweiser car at Michigan International Speedway to honor both his grandfather (Ralph Earnhardt) and his father, who at one point in both their careers used the No. 8 car. After rain caused the race to be ended early, Earnhardt finished 3rd with Kasey Kahne winning the race. After 17 races in the 2006 season, Earnhardt sat 3rd in the championship standings with 1 win, coming at Richmond in May 2006.