I don't know which is harder...
1. Staying alert and in control of your car at all times when on the motorway
2. Becoming instantly alert from a state of distraction when your car decides it is not sure how to handle what is ahead
Actually I do.
I have driven the American highways for many thousands of miles. I know that they can be very long, very straight and very dull, particularly the Interstates. But I also know that you can be doing 70 along a ramrod straight I-something through a featureless prairie and you can see a farm truck considering pulling out from a farm road. What I don't know is how good the AI is at predicting human nature and reacting when that truck and trailer decides randomly to cross all four lanes to get to the farm road on the other side. I know when it happened to me it was a completely ridiculous manouvre, but I also know I guessed it might happen and allowed for it. Does AI guess or predict from an algorithm?
I also have driven the I-15 from Las Vegas to Los Angeles. Ramrod straight, two lanes in each direction and relatively featureless. Heading from Las Vegas to Los Angeles I would estimate every third driver to be unsafe due to either alcohol, having been gambling for 24 hours straight or other reasons. I have never been so scared and on edge in my life as on that journey with all my family in the car with me. It is the nearest I have ever been to being in a multi car pile up. A car in front of me braked so hard the car behind it swerved completely into the mercilfuly wide gap between the carriageways and performed a graceful pirouette before pulling back on about five cars behind me and continuing on it's way.
American highways and Interstates are not at all like our M and A roads.
What I do know is roads will only be safe when ONLY AI is in charge of all vehicles.