My startup makes small (2.5lbs) electric helicopter uavs. At 50ft you can't hear them any more. If you are inside your car, I could position the heli within 5-1

My startup makes small (2.5lbs) electric helicopter uavs. At 50ft you can't hear them any more. If you are inside your car, I could position the heli within 5-10ft of you before you might even notice.