To me this doesn't seem like a disaster but just the kind of thing that happens as you role out a service and expose it to new challenges.
Presumably they haven't had the chance to do a lot of flood training but now they have that chance.
The huge advantage they have over people in general is that ideally if they figure this out then it will stay figured out. Then they can slowly role out and watch for the next hitches from new situations.
If your premise is "robotaxis are so much better than human drivers" then this is almost a disaster. This is only the 10th city they've deployed to, all in the south, and nowhere there's significantly inclement weather. It does not bode well for their expansion plans.
> Presumably they haven't had the chance to do a lot of flood training but now they have that chance.
They should have done that flood training when they weren't putting people's lives at risk. It's not as if this was a situation that no one could have anticipated would arise. Over half of all drownings in a flood happen because of people driving into them. They're just lucky that they stopped service before they had more blood on their hands, but the fact that they were willing to experiment on the public first is concerning.
I am a little worried that this is still a problem after 20 years. Don't they have simulators to test every weird and unexpected road condition offline? And flooded roads aren't exactly an unusual event to begin with.