A Waymo rider-only robotaxi is seen during a test ride in San Francisco on Dec. 9, 2022.Paresh Dave | ReutersAlphabet is again investing in its self-driving car unit Waymo — this time with $5 billion."This new round of funding will enable Waymo to continue to build the world's leading autonomous driving company," Alphabet's outgoing finance chief Ruth Porat said Tuesday on the company's second-quarter earnings call, adding Waymo is an "important example" of Alphabet's long-standing investments.P...