Inaugural race at I-37 Speedway on tap for Texas Dirt Truck Series Inaugural race at I-37 Speedway on tap for Texas Dirt Truck Series Official Release March 20, 2019 SAN ANTONIO, Texas (March 18, 2019) — After months of organizing, preparation and pre-season promotions, the long-awaited... Read More Read more about Inaugural race at I-37 Speedway on tap for Texas Dirt Truck Series