Hello all. I'm working on what I am calling a track pod.
It's a car that runs on a track line suspended above the ground.
The modeling is pretty much done. I haven't really textured anything all that much. I'm looking for help on where to start.
As you can imagine the pod is going to be metal. I want it to look old and used. So a rough metal, pretty photo realistic. I may pay a visit to the local junk yard with my digital camera.

So what kind of UV mapping do I use?
Do I just select faces then map them using a specific UV mapping?
Can I somehow map the entire object?

I don't want it to look tiled or boring. Any help to get going would be awesome.
Thanks!