Voted this 3 on the firstgo, moving it up to a 5 this one. The size really bothers me, you can post up to 640 pixels and you lose a lot of detail when you post his small. Technically it's an ok picture, maybe a little blown out on the right upper side. Compositionally I would have moved in closer and left out some of the plants. Of course this just my opinon.
Too much empty space in the left bottom quadrant that doesn't lead my eye anywhere. The background lighting is washed out and needs to be balanced out to make the car really shine.
Check out this tutorial for optimally sizing your shot for DPC
//www.dpchallenge.com/tutorial.php?TUTORIAL_ID=26
Focus on making your longest dimention 640 pixels.