It makes them heavily dependent on able-bodied drivers (family members, taxis, hired helpers, ...) to move about.
Children are much more independently mobile in cities with good transit. In car-centric suburbs parents or other caretakers are responsible for personally carting their children from place to place, with huge negative impact on children’s quality of life. Children end up sheltered, over-scheduled, over-controlled, and dramatically delayed in learning to live for themselves.
It is for good reason that many college campuses and retirement homes are organized as little self-contained car-free villages.
In my opinion car-centric suburbs are optimized for healthy, wealthy 30–50 year-old full-time workers, and increasingly hostile as people get further from matching that.
My parents have a car but mostly walk around town.
Would I be right in thinking that you come from a car centric area where people don't walk and this lose their ability to get around at a younger age? Perhaps you have difficulty conceiving of life in a pedestrian friendly city.
If so, I don't blame you, there are almost none in the us.
The solution, of course, wasn't to figure out how to get him behind the wheel. The solution is weaning communities off of their car dependence.
But what of Rome, and Paris? Do people with your condition live in them? Those cities aren't built around cars, yet have millions of people from all walks of live.
If we make cities built around cars, and people don't walk, then people get more health problems and die younger. That has to be considered alongside cases like yours.
Also, think of the people who can't drive and for whom getting someone else to drive them is too expensive. That’s a lot of elderly.
Cars kill a lot of people every year. We need AI cars before something changes there, and when that comes, the conversation on exclusion will be very different.