I was changing planes in Dallas Ft. Worth airport a couple of weeks ago. I rode their Skylink transit vehicle. For all intents and purposes, it was an autonomous vehicle. No driver in site. No steering wheel. No brake pedals. Of course, I expect there was quite a bit of monitoring in a control room somewhere on the premises, in case something went wrong.
When I went to my hotel, I rode the elevator to the 15th floor. Again, not a driver in site. Just push a button and it operates autonomously, getting me where I want to go, complete with freight (my luggage).