There's not much new here if you've been following what Waymo is doing. Chris Urmson's SXSW talk from 2016 [2] covered most of this material in more detail. This is more of a PR-level version of that content. The new material covers mainly the limitations Waymo is imposing on their system. It works only where they have very detailed maps of the road system, with more information than even StreetView. This is conservative, but not a bad decision for initial release.
They have a button to call customer service. (That's so unlike Google.)
[1] https://storage.googleapis.com/sdc-prod/v1/safety-report/way... [2] hhttps://youtu.be/Uj-rK8V-rik?t=6