Although there would seem to be practical scenarios where autonomous vehicles are much closer than in the general case. I can easily imagine that limited access highway driving with a competent/licensed operator not paying attention or actively steering could be such a relatively near-term scenario. Maybe you need radio beacons at construction zones, be in active cell communication range, weather within certain parameters. But definitely doable, and perhaps with an overall improvement in safety given that a tired or distracted driver drifting across a lane or plowing into the car ahead at high speed is a major source of accidents.

I'm not convinced that foregoing that in absence of robo-Uber (which I personally expect to be many decades out) is the optimal path.