FORT WORTH, Texas — Six-time national sprint car champion Brad Sweet has retired from full-time racing. Sweet made the announcement during Sunday’s High Limit Racing banquet. The California native, who co-owns High Limit with Kyle Larson, won five consecutive World of Outlaws championships before winning the 2024 High Limit title. Sweet finished second to Rico Abreu in this year’s High Limit chase and struggled at times throughout the season, including missing some time with a concussion suffered at Eldora Speedway. It was an emotional Sweet, who addressed the gathering. “As many of you know, this is going to be harder...