I am certain that widespread urban and suburban “Drone Package Delivery” is a system that will never be implemented. It is an urban legend/myth that is perpetuated only for its publicity factor.
Technically, it is possible. So is the flying car. They are both in the same category. Technically possible, feasibly impossible.
Imagine a kid running out the front door, smacking into a drone hovering a few feet off the ground with sharp knife blades at eye level spinning at 20,000 RPM. (The propeller lift system)
It is also (at present) a one package per trip system. Drone size is dictated and limited by fixed and absolute aerodynamic and power requirement […] Continue reading » Urban Drone Delivery Systems?