The first commercially successful automatic transmission, the Hydramatic was originally found on what brand of GM car?

The Hydramatic first appeared on Oldsmobiles in 1939. Within two years, though, the auto industry wasn't making cars, devoting all its efforts to World War II. So GM built tanks with automatic transmissions and kept gathering field experience with how to build them better and more reliably.

Asked by Adam Markowitz · Last updated 5 years ago · 2K views · SOURCE