I don't think you have thought this through enough.

Car infrastructure takes up the most space, so making a city for driving necessarily exludes other forms of transportation: think about what multi lane highways and giant parking lots does to a city.

On the other hand, excluding (or just minimizing) cars allows these other forms of transportation to flourish. Busses, trains, biking, scooting, walking, wheel chairs, those golf cart things disabled people use in the Netherlands.

Certainly you understand that many disabled people can not use cars: blind people, epileptic people, elderly people, young people, broke people (though lack of income is not traditionaly considered a disability, it can be disabilitating in a car dependent hypercapitalistic society like the US).

There is no one solution for transportation of the disabled, so it's important to have lots of options. This is impossible if your neighborhood is car dependent