In this Aug. 5, 2014, file photo, three-time NASCAR champion Tony Stewart races a sprint car at Southern Iowa Speedway in Oskaloosa, Iowa. Stewart’s return to sprint car racing provided him more frustration than frivolity.
In this Aug. 5, 2014, file photo, three-time NASCAR champion Tony Stewart races a sprint car at Southern Iowa Speedway in Oskaloosa, Iowa. Stewart’s return to sprint car racing provided him more frustration than frivolity.