https://www.youtube.com/watch?v=ZbuCkh54lJM
Apparently this video shows a track made by Polyphony, using the Course Maker tool. Why? Because apparently they will release a few tracks made in the Course Maker before release this tool to players. (Money, money, money)
This track also seem to be placed at Zahara De La Sierra, Spain.
More info at:
GTPlanet.net - News and Discussions thread
GTPlanet.net - Sneak Peak: Course Maker thread
This track will be able to download around February, apparently. Either way, it looks awesome to me! :D