Really interesting idea. It could be a full game for sure. At first I was quite confused as why there was hexes that don't let you build road on them until I realize you can only start a track that's on a "corner" connection. I think it also suffers from lack of proper communication of the game elements since I was not sure at first glance what tile was allowed to be built in and what tiles are not. I could see this to be a pretty relaxing experience.