When I took a test drive of the Model S recently, one thing that struck me about the autopilot was that it&#x27;s not (in my opinion) sufficiently clear what mode the car is operating in at the moment. Semiautomatic mode should be a glaringly obvious UI change, but instead it&#x27;s just an icon. It reminds me of certain fatal plane crashes that led to improvements in cockpit layout and operation. Are we about to make the same mistakes with cars?