Well, I'm a Mazda 6 insider, so I got the 6 CD, and it has a dozen videos. For some of my other ones, I just search the net over and over, and I've got over 700mb of Mazda movies.
To make them an animation, I open them up in GIF animator, get the segment of frames I want, get it the right size and such, and save it as a gif file.
The hard part is making it within the limit while still having the animation run good(frame rate and number of frames) and look good(as in the highest bit level possible for the size of the file).