It’s getting so almost no one except industry insiders can keep track of all the electric flying machines in various stages of development, most of which were highlighted at the recent Uber Elevate Conference in Los Angeles. No one doubts there will soon be dozens of potential flying machines headed to a big city near you. However, the pace of aircraft development is proceeding at a dizzying speed, something that worries people at the FAA. Uber has already said it hopes to support the testing of a new electric vertical takeoff and landing vehicle in both the Los Angeles and the Dallas/Fort Worth area by 2020. Along with vehicle testing, of course, a highly integrated airspace network in which to operate the new machines is needed.