An early patent for the automatic transmission was granted to Canadian inventor Alfred Horner Munro of Regina in 1923.[20] Being a steam engineer, Munro created his device to work with compressed air instead of hydraulic fluid, and so it lacked electricity and never identified professional application.[21] Genuinely steep hills: https://gearboxauto33108.blogdun.com/33003497/gearbox-kereta-auto-can-be-fun-for-anyone