I need this game in my life. Reminds me of a PlayStation 2 game I owned forever ago called HSX: HyperSonic Xtreme. It was a Majesco bargain bin game but it took F-Zero-like gameplay and added a fully featured track editor where you could do a lot of crazy stuff. This feels like that, only better with things like tubes and pipes.
You've got a new fan. Keep up the great work!