Waymo is recalling thousands of its robotaxis after an incident in which one of the vehicles was swept away in a flood. The incident occurred in San Antonio, where a robotaxi was reportedly washed away or driven into floodwater, possibly due to a software flaw. The exact reason for the recall and the number of vehicles affected, reported to be nearly 3,800 by some outlets, appear to be related to the company's response to the flooding incident.