To me, this illustrates exactly why “human supervised” autonomous driving makes no sense. Nobody can sit there hour after hour, day after day doing nothing at all and still be ready to intervene in a moments notice. The whole point of autonomous driving is to take away the mental work of driving.

Also, when you’re driving, you have perfect knowledge of your own intentions. If you don’t know the intentions of the system, you’re purely reacting to all of the information presented to you which is a small subset of all information the car sees. Is the car swerving because a kid ran in front when you weren’t looking that way? No way to know in the moment whether a sudden input is life ending or life saving. The only reason supervised autonomous driving is considered acceptable by anybody is because the alternative is for car companies to take responsibility in the event of an accident. Politicians and car companies are happy for some flunky behind the wheel to take the heat.