The thing that worries me about semi-autonomous cars is that we might end up in the same place we&#x27;ve ended up with aircraft. Aircraft are sufficiently autonomous in nominal conditions that pilot skills atrophy, and then when the plane encounters adverse conditions, these de-skilled pilots simply do not respond correctly to the problem, crashing the plane. Specifically, I&#x27;m thinking of something like Air France Flight 447, where it turned out that the pilot and co-pilot had lost familiarity with how the Airbus A330 behaved while at cruising altitude.<p>Similarly, I&#x27;m worried that auto-drive and smart cruise control systems will take care of highway driving in the normal case, but when things go wrong and the auto-driver disengages, the human at the wheel will have forgotten that a car traveling at 60mph behaves differently than one traveling at 25mph. With aircraft, we can mitigate this risk by forcing pilots to spend extra time in the simulator, keeing their feel for the aircraft from decaying too badly. I&#x27;m not sure what the solution is for drivers. Maybe we can force everyone to play a racing sim for a few hours every month ;)