Cars and trucks have to have gearboxes to provide different equipment ratios for efficient electric power delivery at various speeds. The overall Motors Hydra-Matic became the very first mass-generated automatic transmission next its introduction in 1939 (1940 model yr). Obtainable as an alternative in cars and trucks including the Oldsmobile https://riverxzzwt.blogripley.com/34839897/the-ultimate-guide-to-gearbox-auto