> If your hands are on a steering wheel, you’re watching the road, and autopilot begins turning towards an obstacle, you should be aware enough to grip the wheel fully and prevent the incorrect turn.

> End of story.

No, not true at all. If you’re in a car, paying complete attention, and holding the wheel, but keeping your arms loose enough that the car is fully controlling the steering, you somehow need to notice the car’s error and take over in something on the order of a second or perhaps much less. Keep in mind that, on many freeway ramps, there are places where you only miss an obstacle by a couple of feet when driving correctly. If the car suddenly stops following the lane correctly, you have very little time to fix it.

It seems to me that errors of the sort that Autopilot seems to make regularly are very difficult for even attentive drivers to recover from.