Drones are now gaining popularity. Drone is an unmanned aerial vehicle, meaning, they are not being piloted by an onboard person. Drones are basically modelled as airplanes that serve a utilitarian purpose. Drones are can be both remote controlled or controlled by a computer.
Yes. They are functionally model airplanes. But the advantage of using drones is they are low cost. They are cheaper to buy than airplanes. The fuel and the maintenance cost is also much cheaper. No wonder why drones are being tested for transportation industry.