hi Tom!
this car is way better than my first car was. infact my first 5 cars where never finished at all. to have a nice rendering of your carpaint reflections is to set up the lightning properly. I have somewhere on my HD pictures of a studio lightning setup from industry photographers. over all its important to enlight the car indirectly with self illuminating planes or spotlights reflecting from surfaces. also the light shouldn´t have very intensive colors. gilberts had done really nice lightning setups for his superb cars.
wait a minute. I´ll have to search for my files.
everything starts and ends in the right place at the right time.