I don't really know how to review something so great, since I can't find much wrong with it. The only word that comes to me right now is WOW! I'm utterly amazed by this. I can't even fathom how you did this. Was this from a tutorial, or did you devise this technique on your own? Either way this is a completely new look for me. It seems like this car is from the way distant future, or something like that. The only small problem I can find with this is that I feel there should be a red glow on the top half of the tunnel, just a faint one though. But other than that, it's flawless!
I really like the piece, the colors and technique are great. :3 My only critique is that I would really love to see some more glow from the light car on the walls to really cement in the viewer's mind that the car is in the tunnel in one continous picture.