I'm on version 2019.32.12 and pushed Autopilot to it's curve handling limits on the Blue Ridge Parkway. Everything was done responsibly, the car was always 100% under my control, and I was hyper-vigilant.
I'm seriously impressed. It's one thing to enjoy AP on streets, but another level to see the car handle sharp curves.
I took over in about 20% of the sharp curves. Either because I just knew the car couldn't handle it, or because I didn't want to hear it from my family.
Taking over on 20% of the curves that had chevron markings is incredibly impressive (to me)
Here's where the car can do better, and some of my thoughts:
The car had some trouble detecting the roads edge with grassy shoulders. It was also a fall day with lots of leaves on the road and lots of shadows. So I'm still impressed even with a few fails.
The car is detecting bikers on the road way too late.
Reaction to the oncoming traffic has a lot of room for improvement.
Bottom line: A for curve handling. A+ for speed modulation along the route.