One of the most successful Americans in the history of race car driving is coming to the National Sprint Car Hall of Fame and Museum in Knoxville Tuesday. Sources tell KNIA/KRLS News that Mario Andretti will be at a ceremony at 1 p.m. to unveil an STP-branded tribute car which sprint car driver Donny Schatz will drive during the Knoxville Nationals. The tribute car will have the design and colors of Andretti’s car which he drove to victory in the 1969 Indianapolis 500.