People do all those things now, without autopilot!
Since many (most?) people are already not paying attention to the road, I think autopilot will be a big positive. At least something will be paying attention...
I attempted to broach this subject in another thread that dealt with the brakes not working properly while backing up when creep mode was on. The general consensus was that the problem was resolved relatively quickly (within 48hrs), but I think others were downplaying the seriousness of letting a glitch like that slide past QA. There is a reason that backup cameras are becoming mandatory on cars, because we tend to run over things. And for a software update to introduce interference with the backup process is of the utmost concern to me.
I've only recently become active on these forums, and I've noticed that there are a lot of people that come to the defense of Tesla (for good and bad) when these types of issues crop up. The first two that come to mind are the downplaying of the issue above and the requests by multiple members that one of the members here not report the jump seat belt failure to the NHTSB in another thread. Then there is the other end of the spectrum where the battery fires were blown way out of proportion and everyone on here seemed to keep a fairly cool head.
With regards to the autopilot issue and this thread specifically, I think there need to be serious discussions far in advance along the lines of autopilot-etiquette/autopilot-ethics. Regarding the etiquette, we need to realize that despite the need for constant vigilance on the road right now, we still text, read emails, lookup directions, find the right song, etc, etc, etc. Somehow thinking that is going to change when the car is driving itself is myopic at best. If I'm making that trip from Columbus to Indy, you can bet that I'll be tempted to take a 178 mile nap. Should I? Absolutely not. Will I willingly? I hope sure hope not. I know such a large amount of dis-involvement is perhaps a bit extreme, but we all know how you can get distracted by other things that would, at the very least, take your eyes off the road for longer than is reasonably safe.
With regards to the autopilot-ethics, I think we should still head that direction. And we should head that direction with the attitude that everyone else who makes cars needs to head that direction too. But these systems need to be perfect. There is nothing short of lives on the line. I know that some on here are thinking we are going to see these types of exit-to-exit features by now, or in the next couple months, or the next six months. But I think they are being overly optimistic. This is something we absolutely can't rush and I think the slow roll-out on Tesla's part is a pretty good indication they think so too (despite heavily touting it on the D's release). It's one thing if your backup lines are hard to see in heavy rain, it's completely different if the lane-change avoidance cameras steer you into a ditch because there is snow covering the lane-lines. It's all software, but the tolerances of failure in each instance are (and should be) completely different.
I like being on the bleeding-edge of this technology, I just don't want to be bleeding on the edge of the road by the hand of this technology.