"Ford had the good sense not to give the impression that these things make the car self-driving."
There's the apocryphal story of the Winnebago driver who engaged the vehicle's "autopilot" back in the 1970s on some dead straight road in Kansas and went aft to make coffee. You can guess what happened next.
The problem is partly that Tesla calls it autopilot and mostly that humans do really stupid things.
One of the more interesting thing I learned watching one of the endless "motorway cops" repeats is that when attending anything by the roadside on a motorway, it's common practice to have someone stationed on lookout at oncoming traffic, because some drivers get fixated on the flashing lights and unconciously drive directly towards them.