I saw balls of light shooting across the sky and disappearing then reappearing above Melbourne.I was driving in my car in peak hour traffic. I was waiting at a red light. I looked up into the sky and saw four balls of light moving in unison across a small section of the sky. They moved very fast and then disappeared. Then reappeared and did the exact same movement over the same area of the sky. Then they did it again. The balls of light were significantly separated so it couldn't have been two lights on either side of an airplane. The distance was too far. How they disappeared was very strange, no normal aircraft could do that. And also the speed they moved was way to fast for a normal aircraft. It was dusk and still bright enough to see that there was nothing connecting the balls of light. I stopped my car to film it but by this stage they had disappeared. It was over the sky above the Tullamarine Freeway Ascot Vale area of Melbourne.