Certainly we can, and we will. It will probably roll out in some Michigan cities (and has), San Francisco, Austin, and a few cities.
Then... we wait. How long until Idaho has instrumented cities?
What about construction areas? What about parades? Even with Vehicle to infrastructure communication you will still need AI.
Before we didn't have tar roads with road signs and traffic lights, etc. It would be infinitely more feasible to make roads more clever than trying to cram human-like driving intelligence into car AI.