After 2018.10.4 release I started to notice that I can engage AP on local roads where the speed limit is 25 mph. Since I do drive on local roads quiet a bit I would engage. I can;t do autolane change. but it was good for stop and go traffic. The only limit was that autosteer will not let me go above 30 mph on 25 speed limit zone. It worked great and my range improved. Then I got 2018.12 two weeks back. Now i can engage AP right after a traffic light when I start to move. Except turning and lane changing I let AP do the driving for me under my supervision. Less stressful to drive in my big metro area. It even applies brake swiftly if a car suddenly comes to my lane or a car on an oncoming lane turns left ahead of me. I am monitoring the AP carefully and be ready to take over. Huge improvement. Well done Tesla! Have others noticed this?