Thanks fellas, yea my brothers car is tough to shoot around the city if i want to leave the rest of the setting in its natural colors... its the anthracite supra, and looks damn good, but really hard to make POP in shots like those.
Both images, when viewed in full res. are actually about the same sharpness, the reason the supra doesnt seem so sharp is b/c of the smoother flowing body with lesser reflections to bring out the body lines like with the bmw.
but thanks for the critique, greatlly appreciate. I know the angles sometimes are too much for people, but the guy wanted something different and interesting, and was really happy with the shoot, so i was happy too 
i actually did both of those pictures with my crappy rebel xsi and the 18-55is lens.. I just got myself the 17-40L for christmas and havent been able to test it on the cars too much yet, cant wait to get out and od some rolling shots with it. I am also in the process or getting a 5d mkii...just havent decided if i want to trust the rumors and wait on the mkiii or go ahead and make the investment now 