So you may have seen the pictures of the mobile sentrygun/fortress from the post earlier, but today I took a video:
http://www.youtube.com/watch?v=PPaxWGcwJw8

If people want a higher quality version, I can probably upload one.

Edit:
Uploaded downloadable versions

High quality 1280x1024 273.56 MB:
http://www.sourceop.com/modules.php?...p=getit&lid=27

Lower quality 640x512 43.47 MB:
http://www.sourceop.com/modules.php?...p=getit&lid=28