Apex Motors, manufacturer of the Ace car was formed in Ypsilanti during October 1919 to supply autos to the northwest United States after World War I.
The Hudson Motor Car Company started during July 1909 producing vehicles until 1954 then merging with Nash-Kelvinator to form American Motors Corporation.
Ypsilanti was home to Preston Tucker, whose lust for speed and innovation led to the 1946 creation of the TUCKER 48, a rear engine car with many original safety features.
The Kaiser-Frazer Corporation was formed in August 1945 when Henry J. Kaiser and Joseph W. Frazer began producing 1947 model Kaiser and Frazer cars for late 1946 delivery.
1,397,698 Corvairs, one of the most innovative automobiles ever produced, called Ypsilanti home.
General Motors "Detroit Transmission Division" began manufacturing "Hydra-Matic" automatic transmissions at Willow Run on November 4, 1953.