Yet another SOCcing question

Ok, I've got a good one here...
How would one go about making the "trolley car" in the THZ3 boss go faster? I'm assuming that this part of the map is not actually moving, and it's some sort of illusion caused by the scrolling of the walls around it. If this is the case, then how can I make the walls scroll faster? I want the platform (or trolley) where the battle takes place to go alot faster. I would really appreciate it if someone could walk me through this.

It already goes pretty fast o_o

Unless you use bigger textures, if you make it go fast enough, it'll start to look like it's moving slower.

But, what controls the speed?

Linedef length on the control sectors.

No, the X texture offset on the sidedefs.

This is no soccing question... this is a wadding question. You have to edit the map itself to reach your goal. :-/

Also, the trolley car doesn't need to go that fast.