My personal opinion is that it is a long way off even 10% of cars on the road being controlled by AI. I don't think there is consumer confidence in the technology yet as the technology is still relatively new and not really had much real world testing. I certainly wouldn't buy a AI controlled car until the tech has been in use in real world vehicles on the public road for at least 5 years, and then it would depend on the costs of buying the car and running it compared to a manual drive.
People claim that AI controlled vehicle will replace driving jobs but that would only work on long haul A to B jobs, driving jobs such as couriers delivering parcels to many addresses are not going to be replaced by AI. Unless the AI can get out of the truck and climb up to the 4th floor of a block of apartments and ring the door bell with a parcel in its hands.