Paddya created a very fast track with wallrides, loops and some jumps. There's a nice Intro, outro and ingame-experience.
Check out this tough track featuring "triangular tunnels" in the sky, as well as a dynamic start and/or PF.
It is a simple layout, but figuring out the layout is part of the challenge. There are NO signs, and only 1 CP. Free fly around if it will help you figure it out. I almost made it a platform track but only having 1 CP wasn't very good for platform.