hrmm...I like the idea here, not sure I dig the pink/orange/reddish background though. There's a reflection in the hood too that I'm not sure why it's like that. I think this would have done much better had it been on a reflective sort of white background or maybe even black on a piece of glass about 1/2" up from the black bottom.
nice and simple colors - yellow, red, pink and black. you could use another light source to soften the shadow under the car, or use reflective to light the car.