Sora Robots for online shopping delivery

This system is a combination of a main robotic vehicle and smaller robots that deliver packages by moving in the streets and flying over the air.
In the designed delivery robots, warehouses are only responsible for packing the parcels and determining the approximate location of package for delivery. The main big robot after entering the warehouse automatically loads the packages via the back door. Inside the main vehicle smaller robot then start to reload the parcels for final delivery. After main vehicle arrives at the approximate area, smaller robots start to stir into small streets and home