Missing GT Tracks: Another Batch of Secret/Hidden Tracks in GT2!

-> What do you think about these videos? I somehow stumbled these videos last week!
 
******ANOTHER SECRET & HIDDEN TRACKS!!!!! And this time its from GT2!!!*******

-> Don't worry about the 1st one, its already on the list as [B]Secret Stage Laguna Ring[/B]. ;)

http://www.youtube.com/watch?v=cU4_mosu7eQ

http://www.youtube.com/watch?v=Z-Ar8K0AIgo

http://www.youtube.com/watch?v=PLzluV37wR0

^ Credits from SonicX55 from Youtube!!