It really depends on the implementation. You're assuming that all of the functionality has been revealed. For example, it's not completely out of the question t

It really depends on the implementation. You're assuming that all of the functionality has been revealed. For example, it's not completely out of the question that their technology will b, in part, completely mapped and trained co-ordinates (hey, they did it with StreetView). Each road, each corner, each nuance all recorded several times over for redundant accuracy - plus all the sensory, awareness that they have previously shown. There's also the point to be made that the car may know when and where it will have problems (calculating multiple steps ahead) and let you know that a known obstacle is coming up and you'll have to take over. Nothing wrong with that.