are you wanting to animate the geometry of the track or the texture. if its the texture you want to animate, then there is a fairly recent thread stilll around about the same trick, I believe a good set of values was posted to do it. ill try to find it and paste it here
http://www.deezire.net/modules.php?n...ewtopic&t=6374
Oh, dont read my post, I was confused as to what the original question was.