Photographing sculpture 'in motion' without the use of Photoshop is an interesting way to experiment with the light and use the camera in a way that everybody tells you to avoid. :)

SUBJECT:
To me, interesting subject for this technique is something that is motionless, but represent a motion. Some sculptures, drawings, posters, or storefronts might depict movements, while old rusty car, a baby, or an old person might be good for a more humorous use.

LIGHT:
Shiny spots, like lights or reflections from metallic surfaces (i.e. this photo here) can represent motion, as long as the rest of the photo is darker, or at least doesn't reflect the light too much. Look at the trees on this photo and you may notice that they have their own motion blur, but those shiny streaks are so much more visible, that these subtle shadows are almost invisible without further scrutiny.

CAMERA SETTINGS:
You need slow exposure for this. I used 0.8 seconds, but it depends on your situation. If you are doing this on a sunny day like me, and have a neutral density filter - this would be a perfect time to use it. I did. But if you have a cheap, point & shoot camera, do not despair - you can still do this. Put your sunglasses in front of the camera (grey would produce more natural colors than brown or pink tinted glasses), and it might do a trick. Either way, if you have manual settings on the camera - use it to adjust ISO to lowest number you can, aperture to highest number, and exposure to about a 1 second. This is just a beginning. More adjustments will be needed to get just the right ratio that work in your situation.

MOVEMENT:
Now for the fun part. Let's say all parameters are correct, and light is just right, and you are ready to shake the camera to record those swirls of light. Think about what movement are you trying to show here. For this soccer picture, I could use horizontal panning, or circular movements. Both are easier with a good tripod or at least a monopod. If you set your camera to continuous shooting, and move the camera there and back, your moves will be smoother, and you'll have a better chance catching that perfect one. If your hands are shaking, and jagged line is not the effect you want, one strong drink may steady your nerves. If you have no tripod or monopod handy, use a tree, bench or anything else sturdy enough to give you a good support.

FINAL WORD:
Most important part of this is to have fun. Even if your photos are not the way you wanted them, I guarantee you that looks from the people passing by will be worth it. :)
If you manage to get a good one - please send me the link. I'd love to see what did you accomplish.