Was at the Sunnyvale store yesterday ordering a 3 and the sales folks there took us for a test-drive in our new X to walk through some of the things we'd missed/misunderstood. It seems auto-lane-change is non-functional. The (super, super nice) Tesla assoc checked that it was enabled and was quite confused that it wasn't doing anything. From the middle-lane of a straight 3 lane road, @ ~40 mph, with no cars within 200 yrds it still did nothing. Lane following seems to work, just not changing. Anyone else seen this? Separately..auto-cruise control seems nice and I expect I'll use it in traffic. Lane following seems scary, though. We hit a point on the road where the lane split and it FreakedTheHellOut. Immediately went to panicky 'take the wheel now' state, but it was a pretty abrupt transition for me from just casually watching what it was doing to grabbing the wheel and returning to the correct lane.