On my drive this morning (in the dark).
A country road, no pavements, grass verge in some areas (not all), no street lighting on lots of it, pedestrians on it walking to work (nearby factory) - some with Hi Viz gear, some less easy to see. All walking in the road.
So lots of use of hazards if a car behind me, indicating and moving out to give pedestrian room (or slowing if oncoming traffic as roads narrow - in some cases "flashing" communication with oncoming driver who is slowing to let you pass pedestrian with plenty of room ).
Can't imagine much AI training on this
Next part of route, housing area , lots of parked cars, so a slalom of pulling in and out, again lots of "flashing" with other drivers to negotiate movements.
.. A thing they mentioned the AI had problems on was AI crashing into parked cars, so obviously not trained on what is (for many people) a very common driving scenario..
Goes without saying no lane divider markings on these roads
A simple drive where a human has no hassles (other than having to allow plenty of time due to the delays that will be incurred due to the slowing / pulling in required and (on the no pavement stretch)
knowing you need to drive well below the speed limit with darkness and some pedestrians (bizarrely) not Hi Viz.
.. And lets not even get onto the many horses you encounter on the country roads at later times of day - a whole lot of interaction with the riders that needs interpretation of facial expression and hand gestures, as you need to go past these wide and slow.
I would like an AI car (I could do something productive or fun as a passenger) but have no confidence they will be up to dealing with "out in the sticks" driving for a very long time.