I like the concept, but it seems like all of the colors are too similar. I think that if there were some other colors to really make the car stand out, it would add that much more.
I would have cropped this tight to the back of the car and probably cropped closer to the top of the car as well..... too much wasted space to the right of the car(in my opinion).... I think if you had done that the image would be alot stronger.