All cars will be required to have dashcams. Either by insurance companies or by governments. All cars will be required to have GPS, and be tracked in real time. This is already the case with the majority of commercial vehicles. Incremental steps in autonomous cars, first starting with 'drone' cars. Cars and trucks that are operated from a remote location. This will be piggy backed on existing technology. Cheap camera…
The technology required to geofence, speed-regulate, and otherwise control where, when, and how fast cars can go already exists. Why aren't we using it? We don't need fully autonomous cars. There are all kinds of things we can do incrementally. I have to imagine some jurisdictions are going to realize this, eventually. And once they do the totally predictable savings to life and property will be unignorable.