Amazon showed off its new prototype drone to be used in its future Prime Air service. The 55-pound hybrid delivery drone acts like a helicopter when it takes off by using eight propellers to rise vertically to about 400 feet. It uses sense and avoid tech to safely operate beyond the line of sight to distances of 10 miles or more, Amazon said in the video the drone can fly up to 15 miles. Both Walmart and Google are planning on launching a drone delivery service.”]