Our track is really coming on right now, and is very near completion. Below is some screen shots of our track hovering in a sandbox.
I have put a few flags in to make sure the scale is right and I am happy to report it all goes together very well and the outcome is much better than expected!
Here is a short video showing the track in Second Life.
Our track captures the event spirit of the brief and I think it will look great with people racing on it. I would be cool if we could have the track to hover in the air as well as people would be more intrigued as to what was going on, so we could possibly generate a bigger audience.