Sure, there’s a good argument that we should limit self–driving cars to predictable environments. For example, we could dig a bunch of tunnels under our cities

Sure, there’s a good argument that we should limit self–driving cars to predictable environments. For example, we could dig a bunch of tunnels under our cities and have self–driving cars in them. It’s a controlled environment. If the tunnels connect to buildings underground, then the cars would not need to be used on surface roads.