Just did a quick test drive on 101 at the Oregon coast & can confirm the visibility of vehicles appearing in adjacent lanes. As the notes indicate, they only showed up when they are in front of me. Actually a bit distracting when a car is passing. Just pops into view. Showing cars along either side in blind spots would be more useful, in my opinion.
Also, noticed that once I pulled into the left turn lane, cars passing by in the right did not appear in the IC.
I won’t be able to test off ramp / interchange feature until I will be doing freeway driving on Sunday.