Great idea, fun to drive even at this stage. I hope you think about some "gathering areas" in the begining and the end of the route, like gas stations or motels, just to turn around or have a break. The road itself need serious mesh improvement, it hard to feel anything right now. Add some bankings, it's too flat in corners. Rest, like trees, rocks, etc., will come in time. I have great faith in this project, so little of them in AC. Keep up the good work!