Here is the download link for gm_mariokart_winter_2012: http://43940.artofwarcentral.com/gm_mariokart_winter_2012.zip
-I've removed barriers that kill you on player start and some other stuff that isn't needed for use in Garry's Mod.
Have Fun.
---Update---
Also, the minecraft water doesn't display as transparent and you can see entities (lightstone) through it. Might be something i need to do with the water texture.
Let me know if the link stops working, Ill re upload it.
YES! This is gonna be FUN.
Says that the file is deleted, just saying
Ok, Ill upload another one when I get an chance.
Just Bumping this so it doesn't get lost under a pile of Replies to a non-important thread.
lol, I forgot about this. Here's the updated link ^^above.
Alright then. That's a bunch!