At the end of World War I, they ceased building aviation and marine engines in Elizabeth, New Jersey, at the corner of Newark Avenue and North Avenue. In 1919 the Duesenberg brothers sold their Minnesota and New Jersey factories to John Willys and moved to a new headquarters and factory in Indianapolis, where the "Duesenberg Automobile and Motors Company, Inc." was established in 1920 to begin production of passenger cars. The plant was located on a site on West Washington street at Harding street until 1937, adjacent to the Overland Automobile factory.