During the summer of 1984 as I was going to work I was getting on the interstate, I-81north . As I was merging on to 81 I looked over my left shoulder to check the traffic as I did I caught something in my view about 1/4 of a mile down 81 south. As I was driving I kept looking ahead and looking back several times. It was about 100-200 feet in the air and seemed to be following the center of road.At first I thought it was one of the Apollo Space capsules that was being taken somewhere by helicopter but as I looked again I saw nothing above it or any cables to hooked to it .It was just spinning as if on a string while moving about the same speed of the traffic. Later on I was talking to a friend about what I had seen and much to my astonishment his sister and her friend had seen the same thing as I. I would realy like your input on what I saw .