Ha, yes, maybe self-driving cars would be safer if they also functioned as safety monitors.
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"Take me to the ski resort, HAL."
"I'm sorry Dave, I can't allow you to do that. It's snowing along the way."
"Yeah, I know--that's the idea. I want to make some fresh tracks."
"Driving through the snow would be more dangerous than driving on dry pavement. In addition, I calculate that skiing is 4.76 times more likely to result in injury than reading a book. Please return to your couch; I will download a new book to your Kindle."
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Incidentally, this was a major theme of Asimov's Robots/Foundation series--that intelligent robots programmed to prevent humans from coming to harm would become nannies of humanity in order to execute that command.