It has to be taken apart to put in car. Also requires a key to operate it, and -even more important -the battery. Keep the key separate (as you would with a car key), I also keep my battery apart from the scooter. When I am out and about with mine, and park it up. Do not take it into small shops, the I just remove the key and fold the seat down. Have never had the slightest problem.
Do check the weight of the different parts if you wish to transport it a lot in your car. After my first one, I went for one with lithium technology -battery is very light, and so are the different parts of the scooter.
I was warned against the ones that seem magical as they fold down to suitcase size at the touch of remote control Problem with these is weight if it needs to be lifted up to go into a car, so unless you are extremely fit do be warned,
Any good mobility shop will be happy to go through the different type of models and show you how to break them down to go into the car and let you have a go this.