 He was the last driver to pilot a car powered by the famous Novi engine at the Indianapolis Motor Speedway when he crashed during a qualification attempt in 1966.Weld also founded Weld Wheel Industries, a firm manufacturing forged alloy wheels for various vehicles, including race cars, and was an active sponsor of both race cars and series, including the United States Auto Club series, and ran the firm until its acquisition by American Racing Equipment in 2006, and acquired by Momo and later Grupo Cisneros in 2017.Today, it is part of the MW Company, based in Kansas City, Missouri.