To be honest I think this will be the case with any such autopilot. Any system that doesn't require regular attention will be ignored or forgotten. Even drivers

To be honest I think this will be the case with any such autopilot. Any system that doesn't require regular attention will be ignored or forgotten. Even drivers without autopilot become inattentive when driving doesn't take their constant attention. Human beings are just not good at this. This is why military watch standers are often asked to make rounds instead of standing in one place. Paying attention to something that requires no intervention will make even heavily trained soldiers start to daydream, fall asleep, and wander off. I think training would be necessary for people to safely use autopilot in cars. However, getting people to take driving seriously is an uphill battle already.