I love Teslas...lol...That said, the auto-driving car is not infallible. I'm reminded of the man who decided to foolishly read while his Tesla left him decapitated under an 18-wheeler...In all seriousness, the mechanism is a great; BUT, as the Tesla designers would tell you...It is not fail-proof; and, hands at 10 and 2 at all times, eyes and mind on the road are highly recommended.
Peace.
I don't know how these people can just sit inside that Tesla and 100% trust the autopilot can't make a mistake. There are always bugs in software code!! I would never trust an autopilot with my life.