Waymo says that during July 4 events in San Francisco, some of its driverless robotaxis ran out of power and had to be towed. According to the company, the incidents occurred amid unusually heavy traffic and related disruptions during the holiday period. Waymo attributes the power loss to the prolonged congestion, which affected normal operations for a small number of vehicles, rather than to a broader technical failure affecting its entire fleet. The reports indicate that affected robotaxis stalled while operating in traffic and required assistance to be moved. Waymo does not describe additional details in the available accounts about how many vehicles were affected, where they were located, or the specific towing circumstances. The company’s explanation focuses on traffic conditions during the July 4 gridlock as the main factor leading to the vehicles running out of power.