This automatic transmission deserves its own question. Designed by GM's Cadillac and Oldsmobile divisions, it was the first-ever mass produced automatic transmission. It was introduced for model year 1940 cars as a sophisticated four speed.
Answer Hydra-Matic
The first-generation Hydramatic was so popular that it was not replaced until 1956.
Asked by Dan Henry · Last updated 5 years ago · 163.1K views
