> We have had fully autonomous airplanes and trains for decades now. On the surface, yes. Looking more closely, kind-of-but-not-really. A plane auto-pilot is

> We have had fully autonomous airplanes and trains for decades now. On the surface, yes. Looking more closely, kind-of-but-not-really. A plane auto-pilot is not really meant to fly the plane from gate to gate. It's more a series of automation simplifying each action performed during the flight. But each action have to be triggered individually and controlled by the pilots. For trains, full automation is not common at all. You see it see it mostly on a few metro lines, which is an ideal case (platforms can be secured, homogeneous equipment, very static route, short track enclosed in tunnels). On a classic railway networks, we are still at the stage of a few experimental projects. So, even with trains and planes, we are hardly there yet. And these are much simpler systems to automate: they are operating in heavily controlled environments, with a traffic that is not that dense (compared to a city street) and with tons of help from the infrastructure (think ILS for plane landings, or ETCS signaling & speed control for trains). So, a self-driving car in an open environment like a street? No, we are there yet, and in my opinion, we are still one or two decades away from seeing that.