Because it's not just the sensors, there's a lot of purely human interaction going on on the road. Looking at the other driver at the intersection and trying to

Because it's not just the sensors, there's a lot of purely human interaction going on on the road. Looking at the other driver at the intersection and trying to understand what to expect from them; same for someone crossing the road in front of you - is the guy drunk? Eye contact - nope, he looks fine, he will give way. Etc. etc Come try to drive in Paris or Rome at peak hours. No way on Earth AI can handle this kind of traffic. I always say autonomous cars will require infrastructural change, similar to the one happened when we transitioned from horses to cars. How exactly - I don't know yet, but with the current infrastructure Level 5 seems impossible.