I agree with the above statements. I absolutely HATE blacked out tail lights. Damn near impossible to see the brake lights come on during the day. The only thing dumber is blacked out headlights. [/endrant]
Bokeh, bokeh, bokeh! What f-stop was this shot at? How close to the car were you? Move back, zoom in. I've found cars typically look far better when shot from a distance with a long lens. If you shoot around f/2.8 or so you will also get some nice blurring of the background. Too much distracting stuff is in focus in the background.