The image looks a little soft (out of focus). I'm guessing that you didn't sharpen the image after downsizing for the challenge. Your image could also benefit from a bit more contrast to help separate the car from the background. If you are unsure how to do these adjustments, send me a PM after the challenge and I'll be happy to work through it with you. 5
Perfect subject for the challenge. I'd like it better if you got closer, maybe showed us only a portion of the car with a tighter crop. We'd still get the feel but it would allow you to play with composition and detail a little more.