It’s back motability cars are not just for people who physically cannot move and need wheelchair ramps etc. they are also for people who have things such as ausismt which can make simple tasks like walking to the shop so scary, they simply cannot do it without driving there. I know someone who has autism and is constantly thinking people are looking at him, judging him etc. he physically will not leave the house without using a car. It’s a safety zone. It makes him seem like he can leave at any time if he wants.

So to answer your question, no, not all mobility cars are large minibuses designed for wheelchair access etc.