I already posted this over on the official forums, but I thought you guys might enjoy it as well.

I was sick this past weekend, and being a shut-in, built a 1:1 scale model of rainbow road (using a map I found on google) complete with a texture pack I made myself.

The ladders are raindbows, the color blocks are different materials, the minecarts are updated, and torches, tracks, and dirt are all invisible.

Here is a tour of the course :

http://www.youtube.com/watch?v=o8caMsg7Ti4