No sure why you make that distinction, or what the benefit of that will be. I want to read HN on the back seat on the way to work, not "supervise" the driving appliance.
Op has a good point. You might want to read the web in the back seat, but if you supervising the computer makes it safer, will the public let you doze in the back seat putting your life and the lives of others at increased risk?
If I have to supervise, there is no point. Having a human intervene in what should be 100% automated is putting my life and others at risk. Look at road death statistics: the vast bulk of incidents are are caused by humans sucking at driving - why should anyone want to continue doing that ?
I would say that humans should drive and computers should supervise and correct obvious mistakes, that however is status quo right now. It doesn't sell as futuristic fiction
