futuristic cityscape with autonomous drone delivery system

drone drones delivery futuristic city cityscape building buildings architecture modern technology urban future scifi sciencefiction flying package packages transport transportation autonomous system automated industrial silo silos metallic grey silver sky clouds overcast clean sleek efficient advanced hightech aircraft unmanned aerial vehicle vehicles innovation progress design scene rendering digital art concept aerialview perspective perspectiveview urbanplanning infrastructure metropolis modernarchitecture highrise skyscrapers