The biggest, most-anticipated grand opening of the century is coming this Saturday, May 5, to the historic Hamilton County Speedway driven by Spangler Automotive in Webster City, Iowa, with the kick off to the 2018 racing season. An all-new, lightning-fast racing surface will feature the ground-shaking USRA Modifieds, fender-to-fender Holley USRA Stock Car action, the mega-hot Out-Pace USRA B-Mods and door-to-door USRA Hobby Stocks plus the wild and unpredictable four-cylinder USRA Tuners.