I see advantages and disadvantages. Yes we could be bombarded with advertising and yes we would be full on the grid. That being said it would be one way to get rid of private ownership of cars.

It solves the any time any place needs of the consumer and represents a whole new concept about ride sharing. The need to find public transit would almost go away. Unless automated mass transit is also included.

With some apps on my phone I can track some of my friends 24/7 now and they can do the same for me. So I am not to worried about being tracked.

It sounds like the future to me and would be one way to get me to go car free by the definition made up by this forum.