My name is Will Pittenger. I have been making KMZ sets for Google Earth for a long time. After I starting making those, I wanted overlays for my sets. I was unsatisfied with the accuracy of the images available at Wikimedia Commons. So I started making my own with Inkscape and uploading them. Then I needed a place for anyone that liked my KMZ sets and/or maps to find others. For a while, a simple blog sufficed. But, once I started getting requests, I knew I needed something better. This site is the result. You are welcome to set up an account. Some activities are for registered users only. Take your time poking around and let me know what you think.
I must say you've been very accurate when you made this KMZ but I found one mistake that could have been avoided easily: turns 6-1 through 6-7 at the kart track aren't reconfigured parts of the track but part of the supermoto layouts as shown in this video: http://www.youtube.com/watch?v=u9V4Ue-jF60#movie_player.