Here is a shot the other night of some soda machines using the technique of zooming during exposure. This is basically straight from the camera. I know the florescent light at the top left really spoils the shot. Getting harder and harder to find these out in a dark area. Most people have lights around them to deter vandals I suppose. Will have to keep my eye out for some in a dark area.
Camera 5D, ISO100, Exposure 3.2sec., F-Stop 22, Lens 46mm to 24mm during exposure.