It's Waymo's World. We're All Just Riding in It. 10M Rides Surpassed
wsj.com
wsj.com
It seems perfect for cities without cheap taxis or fast public transit.
Disclosure: I'm a Googler but have no inside knowledge of Waymo.
You can't actually ride one as a tourist, since it requires a USA-based Apple Store account and local credit card.
In the Netherlands store the Waymo One app is not available, I thought it would be the same for other countries but apparently I was wrong.