What do you mean? People still need to get from A to B. A and B are different for almost everybody, so there has to be a "personal" leg of the journey, even if it's just walking to the bus stop.
I meant that with the rising of sharing economy and automated driving technologies, the market for personally owned vehicles would significantly shrink or seize to exist. The main reason for owning a car - getting from point A to point B whenever you want with a certain level of comfort. There are cheaper and simpler solutions to that job-to-be-done than car ownership.
I have been in socialist countries with diesel buses traveling empty everywhere most of the time. Then at peak hours getting full.
The theory was that they are much more efficient, and they are when they are full and you are transported like cattle, not moving directly where you want, and having to wait for them.
Bicycles or motorcycles are much better for moving around the city.