no commercial drone. do you know how much money is spent developing top secret tech on a need to know basis?  its also obvious nobody has ever demonstrated the ability to create gravity in a lab. that why flat earthers say gravity is fake. mainstream science obviously doesnt understand gravity, but i can bet you that the us military has done ample top secret research on it and probably figured out how to essentially move an object within time/space rather than needing propulsion. if the earth revolves around the sun at 67000 mph, imagine how far and how fast you can move by just shielding your craft from that movement. you stay in the same place and the earth moves, instead of the other way around. now imagine you could do that in any direction.
Canada