A Waymo rider-only robotaxi is seen during a test ride in San Francisco, California, U.S., December 9, 2022.Alphabet reported Thursday that Waymo, its autonomous vehicle unit, is now delivering more than 250,000 paid robotaxi rides per week in the U.S.CEO Sundar Pichai said Waymo has options in terms of "business models across geographies," and the robotaxi company is building partnerships with ride-hailing app Uber, automakers and operations and maintenance businesses that tend to its vehicle fleets."We ca ...