Uber Technologies Inc. is planning to spend more than $100 million to build fast-charging, autonomous-vehicle charging stations in the US, the latest move to establish itself as a critical player in the robotaxi industry.The company said in a statement on Wednesday that it will focus on building the new high-capacity charging hubs starting in the San Francisco Bay Area, Los Angeles and Dallas — markets where it also plans to launch public robotaxi services with technology partners to compete wit...