For me it seems politicians are afraid that their country is to be left behind and thus establish a standard way for people to get a license to let a car drive on a limited number of streets. In this way, autonomous cars can be phased in over the next 50 years. Also what is the problem with city traffic? Parking in the city is part of it, cars can do that autonomously today pretty well. This sonic sensors are mostly for city traffic. Besides parking they are useful to detect pedestrians running in front of the car. And fueling the car was not done by the driver in the past, but by the operator of the gas station. Good 'ol time. In Europe a truck can drive non-stop without refueling. Low speed, Diesel engine, large tank.