What about the danger of drones falling into streets, or dropping their payload into streets? Or windshields? Or onto people's heads? Think of gusts of wind. Th

What about the danger of drones falling into streets, or dropping their payload into streets? Or windshields? Or onto people's heads? Think of gusts of wind. Think of a sudden rainstorm. Think of how rain changes the reflectivity of everything, making navigation much more difficult. Think of snow. Think of sprinklers. Think of a faulty battery dying. Think of batteries catching on fire midair, drone on fire dropping onto a home, or an apartment building. Think of the drone losing power midflight. The fact that they threw people at this means it was clearly a marketing tool, and not a serious engineering project.