Different voltage/amperage/something.
You’re not plugging in a washing machine, like you’d plug a washing machine into a standard outlet. You don’t need that kind of power in a car, usually.
And if you did need to plug in a washing machine, then the electrical system of the car, and the battery, wouldn’t really be sufficient anyway.
The car-plug has a different voltage/amperage/whatever that is made for smaller devices, that need less power, and won’t overwhelm your car’s electrical system.
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