Waymos blocked roads and caused chaos during San Francisco power outage

Many of Waymo's self-driving cars blocked streets of San Francisco during a mass power outage Saturday and forced the company to temporarily suspend service, raising questions about the cars' ability to to adapt to real-world driving conditions. The power outage affected 130,000 homes and businesses in San Francisco, nearly one-third of the customers served by Pacific Gas and Electric Co. It was caused by a fire at a power substation, officials said.