> Why automatic transmissions had to be invented? To be honest, this is interest question. May be better to look from other side - why manual transmission app

> Why automatic transmissions had to be invented? To be honest, this is interest question. May be better to look from other side - why manual transmission appear? - For people, most natural way to drive was horse racing style - use whip or spur on to start or to run faster; draw rein to slower or to stop; pull right (left) to turn right (left). Machines with automatic transmission use gas pedal to run faster, and brake pedal to slower, this behavior is more close to horse control than manual transmission. Manual transmission appear on most machines, because it is simpler than automatic and cheaper, but automatic is more ergonomic (more natural). Some machines are only automatic, usually for some reason. For example, some trucks have automatic transmission, because it have special safety measures, so one could not broke it if just accelerate to much. For passenger car, usually auto transmission is just for more comfort.