Really well done. It's tricky, but I've come around to it. There is a spot on the map where if you go off you can fall through the map into limbo. I believe it's during the Esses of turns 2-3-4-5 where the great runoff on the right is with a large blue area. It's not common, and I'll try to recreate it and get back to you if you need to. This is the only "flaw" with the map so 5 stars is earned.