I lived around the corner to a family who had a disabled daughter and watched her grow up from the age of 8 till she was in her twenties. Her father always had the most expensive motability car that was on the scheme, be it a Merc or whatever. His daughter never ever went in the car. She was taken to and from hospital, school, and college by taxi.
Her dad used the car for work, pleasure and to go over to Europe with his wife once a month in the motability car whilst the disabled daughter stayed at home.
He would wind up the neighbours no end until three of the residents in the same road (two of them also disabled and on the scheme) put a complaint into motability. Motability said that by going to work every day, his wage was benefiting his daughter (despite her having a job and getting a taxi to work). His holidays were allowed has motability viewed them as rest bite.
I was dragged into the debate despite saying it’s nothing to do with me. In the end I moved as the atmosphere was toxic.