In my opinion Tesla and all other manufacturers should perfect their Level 2 tech (and not call it autopilot) and then jump straight to Level 5, even if it means it's 3 decades out. We can't have drivers sleeping at the wheel in level 3/4 cars with patchy software. And that's regardless of whether manufacturers can prove that their tech has markedly fewer accidents than often-failing human drivers. I'm happy to take the risk to crash with a sleepy fleshdriver, but I'm not ok with crashing due to a software bug. I think many share this sentiment - which means there is a double standard that setting the bar much much higher for autonomous systems than they will ever be for humans.