In 1921, after Heine had purchased "Economy Steel Manufacturing Company", he had a new car designed and built with resources from the acquired company. The 1921 Heine-Velox, advertised as a custom-built luxury car, was first shown at a San Francisco auto show. The car had hydraulic brakes on all wheels, and a V-12 engine commissioned from the Weidely Motor Company. It was one of only a few vehicles manufactured after 1919 to use a V-12 engine, which was not widely reintroduced until the early 1930s.