In general, you should not plug a standard household vacuum cleaner directly into your car's power outlet. Household vacuum cleaners are designed to operate on standard electrical outlets with higher voltage and wattage than what a car's power outlet (often called the "cigarette lighter" socket) provides.
Car power outlets typically supply 12 volts of direct current (DC) power, while household vacuum cleaners usually require 120 volts of alternating current (AC) power. Plugging a vacuum cleaner designed for 120 volts into a 12-volt car outlet could damage the vacuum cleaner and might even cause electrical problems in your car.
If you need to clean your car interior, you should use a vacuum cleaner specifically designed for car use. These are typically smaller, portable, and run on the lower voltage provided by the car's power outlet. Car vacuum cleaners often come with attachments that are useful for cleaning the tight spaces in a vehicle's interior.
Alternatively, you can use a cordless handheld vacuum cleaner that has a built-in battery. These types of vacuums can be charged at home and used in your car without any issues.
Always check the voltage requirements and specifications of any electrical device before attempting to use it in a different power source. Mismatched voltages can lead to electrical hazards and damage to the equipment.