I was just in Vegas and saw these rolling around. They seem to have a mix of robotaxis (like the ones pictured) and decked out Toyota Highlanders that look like Waymos but not as well "packaged", though in my personal experience I saw far more of the Highlanders than the custom robotaxis and all of them seemed to have a driver behind the wheel.

Vegas is an interesting place to launch IMO (and I believe they only operate in/around the strip). On the one hand all they really have to navigate is the strip which is just one giant straight road. But on the other hand most casinos on the strip have their entrances in the back and once you get off the strip and try to go up to one of these casinos it's a maze of roads. But that only speaks to the technical hurdles, I'm sure a big part of the calculus is that Vegas is very much a "novelty" kind of place and folks are much more likely to give it a shot when there.