A Solid Motion is all the space an animating object moves through. I wrote a script for 3D Studio MAX to generate Solid Motions, and made a lot of images with this technique. For a more complete explanation, please check out this blogpost
You can download the script here: SolidMotion version 13 (right click, "save target as...").
high resolution and ultra high resolution
high resolution and ultra high resolution
high resolution and ultra high resolution