Lighting Test Article
I used my RX8 as main props and some UDK assets for detailing. I think this test turned out really well, about the same quality as Crysis but running at at least 120 frames still.
Material (Carbon Fiber) in UDK Article
And here are some Carbon Fiber Material shots. I found it was extremely easy to make it and the UDK material editor is very flexible.
That doesn't really look realistic at all, the material is a little to simple for what it's suppose to do.
If you need some help with it, I have a lot of experience with the material editor.