> Do you test the Autopilot feature? Wouldn't creating a much safer vehicle be real progress?

What you don't understand is deploying a driving assistance feature is probably the fastest and most efficient way of improving the system because it is the fastest way to collect huge amounts of data. When used properly (As the machine reminds you each time you use it), it should always be a safer option than regular driving with the added benefit of providing valuable data to improve the system.

You should rephrase your question to: "What value is an Autopilot if it kills you when you use it in a way it explicitly told you not to?"