Even if no one ever does that, sends an empty car anywhere, there will be an increase in "drivers" on the road as more people that would not be allowed to drive

Even if no one ever does that, sends an empty car anywhere, there will be an increase in "drivers" on the road as more people that would not be allowed to drive because they have no license (ie. the elderly and children) are now able to drive by themselves in a single car, whereas previously they would have transported themselves with other people or on public transit. Autonomous cars will result in an explosion of cars on the road and a severe increase in traffic. It'll be a disaster.