Advertisement for Cadillac LaSalle from General Motors, 1938, "You'll Love a LaSalle!"

General Motors introduced LaSalle for 1927 as a "companion car" to Cadillac. La Salle's cars were priced below those from Cadillac, but initially featured Cadillac engineering and quality. LaSalle shifted to using more Oldsmobile components in the mid-1930s but returned to its Cadillac roots by the end of the decade. The 1940 model year would be LaSalle's last.