Uber users in Austin now have a choice between a Waymo robotaxi and a human driver. The two companies officially launched Tuesday the “Waymo on Uber” robotaxi service in Austin as part of a partnership that has deepened in recent months. The launch comes just days before SXSW, the annual tech, music, film, and comedy conference, kicks off in Austin. Starting today, Uber users who hail a ride may be matched with a Waymo robotaxi. Users will still be able to opt for the human-driven vehicle, and n...