Well to be honest, since we switched to our new track system (a fully modeled approach, instead of our old height-mapped tracks), no one has made an original track for VDrift from scratch. However it shouldn't be terribly difficult.
The first step is to get the roadway. I suspect that the best way to do this would probably be the TORCS track editor. It lets you build the road (I think) by lengths and radiuses, etc. so you can tweak everything and get it "just right". From there, you can export the track to a model. Then you would need to build scenery all around the track model using 3D modeling software, including the ground, trees, walls, buildings, and other objects. All these models will of course need textures.
Once you've built the track & model, then you can export everything to a format that VDrift can load. Our model format is called JOE, and there is JOE export script for
Blender. You don't have to do all your modeling in Blender, but you'll have to import it into Blender before you can get it into the game.
If you're really serious about this then please come chat with the developers on our IRC channel. You can see more information on how to do that on the
Chat page. If you have any questions about that feel free to post here or contact me.
. Anyway I am a 3D modeler and a Texture Artist and I was thinking how to add maps for this? In the FAQ you only have how to add cars... any help could be useful 8)