Many things are possible, but I might not like doing them. It's totally fine for someone to not want cars and not use them. But it's too far to say nobody should be using them, no matter what. Not implying you said that (I know you just commented on the "unrealistic" part), but just referring to the general theme here.

I personally love driving. Since I was a kid, I always wanted to drive cars and even now, I enjoy the feeling of driving a car. One can argue about whether it's the best mode of transport, etc. but for me (and many like me), it's a pleasure of life.

Let's try to stop people from carrying assault weapons before we move to cars?