Our photography instructor sent us home with a project - stand at the side of the road (not in it, the paper said) and take photos of the traffic as it goes by while manipulating your ISO settings. Report your results.
My favorite was the photo for ISO speed 400.
You can see the reflection of my car and the building behind me in the windows of the bus, but also the ghost image of the truck resting in the median BEHIND the moving bus. I'm not sure if this might have had more to do with the shutter speed than ISO, but our class won't get to that until next week. Either way, cool stuff.