Waymo's robotaxis are facing a temporary setback in San Francisco due to flash flood warnings, causing a pause in their service on Christmas Day. This isn't the first time Waymo has had to halt its robotaxi operations in the city. Earlier in December, a blackout left tens of thousands without power, and Waymo's autonomous vehicles struggled to navigate the gridlock, highlighting the challenges of operating in complex urban environments. The National Weather Service's extended flood watch for the San Francisco Bay Area adds to the concerns. Waymo's response to these weather-related disruptions is under scrutiny, especially as they aim to expand their service area across the U.S. in 2026. The company is also facing public scrutiny and safety concerns, with experts suggesting that regulators need to consider the number of autonomous vehicles on city streets and their performance during emergencies. The former CEO of San Francisco's Municipal Transit Authority, Jeffrey Tumlin, emphasizes the importance of testing and data collection to ensure the safe operation of robotaxis in various conditions.