We could have achieved "self driving" in a sense, even back in the 80s, if we had the will to spend billions (maybe over a trillion) on putting monorail power l

We could have achieved "self driving" in a sense, even back in the 80s, if we had the will to spend billions (maybe over a trillion) on putting monorail power line tracks on roads, having designed electric cars that latch onto them, and have a national traffic control system that controls/drives them. The traffic control system would have perfect knowledge of where every car is, and could direct traffic in a highly optimal manner from point A to point B for each vehicle. The vehicle's themselves would have systems in place that prevent collision (similar to the system that NYC subway has). Altogether, it could have been achieved, but would have required an unprecedented level of public spending.