Many of the proposals I've seen for car-free neighborhoods in the US have parking at the edges. You can't drive to your house, but you can drive to a parking structure 1000 feet from your house.
Let me just tell my disabled wife that she has to walk a fifth of a mile to the house after she parks, she'll love that on the days when the fatigue is bad or her feet feel like pins and needles.
God forbid we have the absolute luxury of parking by the door.
That’s definitely a concern. Considering that 60% of all car trips in the US are less than six miles, the goal would be to provide alternatives so she doesn’t have to drive.
Unrelatedly this is actually the irony of the 15 minute cities fracas in my mind: america is already full of fifteen minute towns. 15 minutes from leaving the door to your destination in a car. That kind of thing can feel freeing, but it is really a prison that ties you to making money if you want mobility. In contrast I see older folks and disabled folks moving around all the time in my walkable city with ok transit. Their mobility still requires money, but much less money.
Then just don't live there? It's not for everybody and that's OK; nobody's forcing you to live there. Fewer cars on the road will make the roads emptier and more usable for the people who do have to use cars.