I didn't mean to be unpleasant. It's just that if you've worked with technology, esp. in some kind of development capacity, you'll know that it is just as problematic as dealing with people.
Software, when it is developed, goes through multiple stages of verification and testing, before it is released into production and made available to customers. Despite best efforts, software is almost always released with bugs. It is an ongoing process to keep software free from major bugs, and that process is never really complete.
So, first of all, imagine how complex driving software would be. How many use cases and scenarios to test. How many possible bugs. It is insane to think that software can ever be trusted to drive a car, no matter how many iterations of testing and fixing it goes through.
Yes, like you said, people can be idiotic drivers too, and they are. Some get behind the wheel drunk, some text while driving, some engage in oral sex while driving. But, they have an ability for creative problem solving that no computer will ever match.
I am old enough to remember when it was the conventional wisdom that desktop computers would never be powerful enough to be of any real use to anyone. Yes, it was insane to think that they ever could. Imagine that.
The other flaw in your thinking is that "creative problem solving" is the issue that needs most to be addressed here. It isn't. Your pointing to extreme human behavior while driving is both hyperbolic and reductive.
You should be able to prove to yourself both empirically and by observation that human beings on a whole are simply very bad at piloting cars. Because we enjoy the activity, our egos tell us we have skills we don't possess, they urge us to rationalize why the rules of the road don't apply to us, and they give us an excuse to be ignorant of the basic physics of the entire exercise. Computers don't need to be creative to be safer drivers, they mainly need to be more rational than we, which is the easy part, since we are fundamentally not rational where our egos are in charge.
The only reason we continue to allow ourselves to engage in the highly hazardous behavior of driving is that we have yet to develop a better way. That way is coming.
It is not insane, it is inevitable.