Excellent idea for a map! And very fitting indeed for the challenge.
It was started up last year and then shut down again. They have beam in again now and are looking to get it all the way round by the end of the month or early December.
There's a small (!) thread on this and similar subjects:
http://www.cartographersguild.com/showthread.php?t=2356
I'm really looking forward to seeing this one