http://www.youtube.com/watch?v=7ZqeONrJD98
http://www.youtube.com/watch?v=Xj852gjNeRA
As this is an unmodified track from another game, it has two alternate paths. If you go forward at the intersection, you end up in the harder but faster path; if you go left, you end up in the easier and more fun but slower path.
And yes, the looping and corkscrew ARE playable

The map BTW uses Nexrun physics and requires a SVN server.
Oh, and please ignore the texture alignment issues... when the tiles are redone maybe later, they won't use this asymmetric texture any more

For extra challenge, try completing as lap in both routes without using the Laser. The normally easier route is VERY hard to beat without laser without a running start...