Did you get access from the public beta sign-up list, or some other channel? I've been on the waitlist for over a year and have seen people utilizing Waymo near my apartment, but nothing's budged for me. I did get into the Cruise beta, and that just made me positive Waymo will almost completely replace other forms of car transit for me once it's available, but Cruise is very limited.
Just public beta sign-up list as far as I know! I don't remember doing anything special besides signing up for the waitlist and filling out a survey, so I guess I just got lucky.