“No street would need to be completely cut off from vehicular traffic; emergency services could get through and transport for the disabled, just as they do in places like Ghent, Belgium, where the city center has been car-free since 2017.”

Every street is still accessible by car. You simply wouldn’t want to go on the pedestrian streets until you absolutely have to because like in car free European cities today, you’d be intermingling with pedestrians with a speed limit of like 5mph.

You’d simply drive the vast majority of the way on the car streets, and then the last 20-30m on the 5mph street so you can take your stuff up to your doorstep.