In 1913 the Duesenberg brothers founded the Duesenberg Motor Company, Incorporated, which was subsequently sold, and in 1920 were among the founders of the Duesenberg Automobile and Motor Company, which manufactured passenger cars in Indianapolis, Indiana, from 1921 until 1937, including the Duesenberg Model A, the brothers' first mass-produced vehicle. Fred Duesenberg served as the chief engineer at both companies. From 1926 until his death in 1932, Fred Duesenberg focused on designs for luxury passenger cars, which included the Duesenberg models X, S, and J, while serving as vice president of engineering and later in the 1920s as president of the company. Duesenberg died from complications following a car accident in 1932; Duesenberg passenger-car production ended five years later.