Another fun anecdote. When a Waymo is in the vicinity of another Waymo they acknowledge each other in a whimsical/cute way - the windshield wipers swipe once (I'm not sure they still do this). But it wasn't implemented very well at some point since the Waymo I was in was behind another one for many blocks. The wipers went at least 17 times. As an earlier adopter I provided lots of feedback. Even little things like I tried working on a laptop in the back* and when I went to type in my 1password password I reached up to cover the camera that is positioned perfectly to see my keystrokes.
* Not recommended in SF. But I imagine on the 280 it would be great one day.
* Not recommended in SF. But I imagine on the 280 it would be great one day.