You can make the textures to scroll, like in checkpoints. (And we'll roll a checkpoint texture in this example)First you'll have to rename texture's identifier to have that .MAT in the end, again.
Then open the track's textfile, go to "START OF FUNK"-section and write:
DISTANCE // Distance or constant.
ROLL // Rolls the texture.
CONTINUOUS // Repeats the rolling.
0.5 , 0.5 // Speed (horizontal, vertical)
NO FUCKING LIGHTING
NO ANIMATION YOU CUNT