Do people think the demo visualizing the blue path was coming from the new end-to-end control network? It does seem to behave differently at least at roundabouts. This DirtyTesla 11.4.2 video shows highlighting other vehicle in blue and whole path is faded indicating it's waiting for the other vehicle to fully pass. Whereas V12 seems to show no blue path when waiting/stopped and begins to extend as the other vehicle is passing for smoother initiation showing intent before switching to "full speed" blue path.