i like the overall composition of the photo itself and the high contrast affect. i might have cropped down a bit from the top. The car itself appears to be a bit soft and maybe underexposed (passenger side). Maybe changing the angle and shooting the driver side would have fixed that.
Not really sure what you were going for here, but I'd crop out the overexposed sky first. Next I'd remove those diamonds from the photo. I think the text is distracting. What you have left is a nice image. I think as the previous poster noted, it does look a little soft on the passenger side.