Vehicles have to have gearboxes to offer different gear ratios for efficient electrical power shipping and delivery at distinct speeds. The final Motors Hydra-Matic turned the main mass-manufactured automatic transmission pursuing its introduction in 1939 (1940 design 12 months). Readily available as an alternative in autos like the Oldsmobile Sequence https://emilianozjmtt.blogunteer.com/33128415/top-latest-five-gearbox-auto-urban-news