Uber has named Los Angeles as the second test city for the drone taxi service they're working on.. TechCrunch reports that Uber has formed an official agreement with NASA to help develop UTM (Unmanned Traffic Management) technologies at low altitude. Uber plans to start test flights for a drone taxi service in Los Angeles by 2020, and have a demonstration service in place … [Read more...] about Uber Names Los Angeles as Second Test City for Drone Taxi Service