Fli0x does have a point there Bem... maybe instead of tweaking the refs you should move the car indoors? Add more refs like the one in the hood, and just rebrush the front windshield. It would make it possible for you to change the bg to an indoor scene. Me personally think it could look cool
Just find a nice indoor carshow bg to work with
Keep it up, love the design, and keep the air intake on the door, looks sick!
CHeers!