Right now, if we got rid of all cars, people would be stranded in anything outside of major cities, and even in most cities there's food deserts. Oh and don't forget all the homeless people who live in their cars, there goes their shelter.
I mean, we can play make believe with a hypothetical world where cars don't exist and there's magical transport that works for individuals as well as groups that is harmless and makes no pollution if you don't like the "status quo" thinking of things like "real world consequences" and "basic empathy" and "understanding other people's living situations", but if you did that you wouldn't want to institutionalize people just for owning a car to survive.