ELI5: Explain Like I'm 5

Automatic transmission system

An automatic transmission is a kind of car part that helps make your car go faster. It works by using special gears inside the transmission that can change how much power the engine is putting out. When you drive, you don't have to worry about switching gears as the transmission will do it for you automatically. As you speed up, the transmission will make sure that the right gear is always being used, so that you get the most power and speed out of your car.
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