As much as I advocate autonomous cars and have taken multiple Waymos in a couple cities, one limitation Waymos have is when there is a queuing situation like at dropoff/pickup areas. Whenever organized chaos is overcome by humans and nonverbal communication, Waymos just fall flat. Hotel valet areas, office building dropoff areas, narrow streets with parking on both sides when a work truck is parked to unload something, etc. Waymos just stop working.