Robotaxi services like Google's Waymo allowed to expand in San Francisco

Driverless robotaxi services have been granted permission to expand their business in San Francisco, California. Companies such as Google's (GOOG, GOOGL) Waymo and General Motors' (GM) Cruise will now be allowed to deploy an unlimited number of robotaxis, operating 24/7. Yahoo Finance's Rachelle Akuffo breaks down the story.