OK, but there are clearly cases where the autopilot gets into trouble, and the human needs to take control again quickly. The human driver absolutely cannot doze off.

Now, I realise people in old-fashioned non-autopilot cars can and do doze off, and that's very dangerous. But it's not clear to me how the autopilot improves that situation. Relying on the autopilot actually encourages you to doze off.

We already have simple remedies like "pull over if you feel tired" and "never ever pick up your phone while driving (or you'll lose your licence)"