I posted a video of this map in the WIP thread, but I've decided I can't get it into a state that meets my absurd standards. Biggest problem is R_Speeds, which peak at 1700. Y'all might be okay with that, but I'm not. Still, I put a ridiculous amount of work into getting that train to work (and even made the textures for it) so I'm gonna go ahead and release what I have of it.
EDIT: Apparently the BSP asks for a missing WAD file. All the textures are present in the other included file, though, so just rename DM_crossingover.wad to DM_streetrun.wad and it'll work.