Theres something spectre like in this time exposure experiment. It was more or less dark, and for some reason, the street lights hadn`t come on yet. I asked a friend-on my signal-to walk down the footpath towards and past the camera whilst I held the shutter open. As he was doing so, the lights from a passing vehicle swept round the curve of the hill, momentarily illuminating him in motion.The back lights for that vehicle were then briefly occluded by him as he further came towards the camera.