Ait, here is my final render on my latest project, Service Tunnel. I am not entierly satisfied but I have to move on since I have a contest coming along.
Everything is modeled on blender and rendered in the internal render engine. I used a simple node setup for the motion blur, thats about it. Everything else is just texturing and modeling.
High-res version: http://220.127.116.11/filer/service_tunnel_final.png