I'm from the UK, a reasonably rural part. I spend a significant amount of time in San Francisco with my partner. I've used Waymo while there, partly out of curiosity. I've come to understand that the service is quite limited in terms of geographic extent (only recently did it begin to serve SFO), it has required an insane level of pre-mapping, in addition to the complex sensor system employed on their cars. This has enabled it to work on a straightforward grid system, in one of the wealthiest concentrations of land in the world, where the climate isn't too complex (LIDAR defeats Karl quite easily) and road conditions well monitored and understood. There is no way my local taxi company here in England could justify the kind of expense needed to acquire enough of the vehicles, let alone there be an economic case made for detailed, repeated pre-mapping of the area - which contains very changeable road conditions, a more dynamic climate than San Francisco. It's an interesting service, the vehicles are objectively very good, but is it worth twice the price of an Uber - especially as Uber's can "duck and weave" better to facilitate more convenient drop offs.