You do realize that when I'm flying our small aircraft using autopilot (and not required to file flight plans or talk to ATC), I'm sharing often-crowded airspace with passenger airliners carrying hundreds of unaware passengers and families, right? And that our plane operating on autopilot could fly right into your house?
A lot of people give this analogy of aircraft versus car. I feel that analogy is very misleading.
When you are in the air, and your aircraft misbehaves, you are miles from the closest solid object. Even at aircraft speeds you have 10-15 seconds of reaction time at the minimum. In fact, most pilots do not use autopilot for take off or landing - they use it to align for landing but the actual landing almost always is manual (unless fog etc.) .. plus aircraft pilots undergo much more stringent training, checks, and so do the aircraft, and we have a lot more time and experience with airplane autopilot, and lot fewer aircraft than cars.
In an automobile, you are a fraction of a millisecond away from a multi-car pile up and 5-10 potential deaths and injuries easily. And any dummy can get behind the wheel, and there are cars feet away from me at high speeds when I go for a walk.
So please stop comparing aircraft autopilot with automobile autopilot. It's not the same!
Back to the original point though, no matter what Tesla does to the software, Autopilot from here on will get incrementally better with crazy wizardry in software. While I am very impressed with that wizardry, the fact remains for the next 2-5 years,
you will need to keep your hands on the wheel and the better it AP gets, the more your increased false sense of perceived security.
Meanwhile, nobody is saying a decent MP3 player or Nav is a bad idea.
Maybe Tesla should shift priorities a bit?