diplomat33
Average guy who loves autonomous vehicles
The impressive part was the car handling roundabouts at all that conflict with the map data. It was vision overriding map. And I noted that it was a screwup in my original post.
It was a new roundabout with clear lane markings. Vision is very good when roads are "clean" with good lane markings. And Tesla only uses basic nav maps. Tesla relies mostly on vision for actual driving tasks. So with clean lane markings, it is not that surprising IMO that FSD Beta could handle lane keeping in a new roundabout well.