This game is very interesting to play. But the most interesting part (correct me if i'm wrong) the only choice player has is the direction to go on an intersection. It feels really satisfying to pick a superior path given the current roll. I think if you plan to expand this game you should give the players more choices to make. Maybe give an option to pick one out of 2 random upgrades, or some way way to make a few next turns more predictable. This way player would actually feel like they did something that led to their success or failure.