I took a photo on the bridge that crosses lake Ponchitrain (enormous lake that New Orleans sits on) as the starting point. It's the longest bridge in the world, and when you're out in the center, land dissappears in both directions- there's just water and bridge.

I made the photo seamless and broke it up into a few different layers moving at different speeds to produce an animation of an endless bridge.

To see the result, go to:

www.purplestatic.com/sf0/bridge.htm