(http://s005.radikal.ru/i209/1510/1c/096ea3c029e6.png)
Not sure why, but this image took for ever to load for me... image size, or new forum thing... not sure.
Interesting backplate. I think you can improve some by better matching the car to the image. Looks like your placement of your light source is good, but the highlights look a bit blown out. If the telephone poles and trees are silhouetted, I feel like the side of the car closest to us would be much darker. Smoke effect is nice, but a bit confusing since the car/wheels aren't in motion.
I like this! It's interesting and I think you can improve it a bit. Nice detail on the wheels btw.