I'm terrified about NoAP at this point in a way that I would not have been two months ago. Since upgrading to v9, autopilot on my Model X has been borderline erratic. I'm getting three or four "Take Over Immediately" errors per day, versus maybe one a month prior to the "upgrade". In many cases, this has occurred while literally stopped in bumper-to-bumper traffic, simply because a car came around my side.
And after the 42.2 upgrade, AP has gotten even worse. My car is now reproducibly driving right across the double yellow in one spot where the lane markings are perfectly clear, and right off the side of the road in another spot where the lane markings are perfectly clear. Worse, in that spot where it drives off the road, it aims straight towards a telephone pole only a few feet away, which means you have maybe half a second to yank it back into the lane or you're dead. (To reproduce this, drive on Ridgecrest drive in Los Gatos away from Highway 9, towards downtown.)
Also, at one point, I got an "Autopilot disabled. Front radar obstructed" error that required me to reboot the console while driving to get autopilot functionality back.
From what I'm seeing, the autopilot functionality in version 9 is much, much worse than it was in version 8. At least in version 8, the freakouts were predictable just by looking at the road, and were relatively rare. In version 9... not so much.
Also, after a couple of hundred miles driven, it still can't enable NoAP, saying that the cameras are only 98% calibrated. It has been at 98% for over a hundred miles.
Something is not right here.