Buick offered two industry 'firsts' for 1938; coil springs at the rear and it's Automatic Safety Transmission, which was a step in the development of the automatic transmission.
Four series were offered by Buick for 1938; the Series 40 (Special), 60 (Century), 80 (Roadmaster) and 90 (Limited). The lower-price series 40 was, by far, the biggest seller and offered eight different body styles.
The 1938 Buick Special was powered by a 248 cubic-inch inline eight-cylinder motor that developed 107 horsepower. The bodies were installed on a 122-inch wheelbase chassis.