AMAZON IS GEARING UP to make as many as 10,000 robotaxis annually at a sprawling plant in Hayward as it prepares to challenge self-driving cab leader Waymo. Tesla CEO Elon Musk is also vying to join the autonomous race. The 220,000-square-foot (20,440-square-meter) robotaxi factory announced Wednesday heralds a new phase in Amazon’s push into a […]