That's not too bad. I know you had to recreate the spoiler, so it wasn't easy. But I like that it (spoiler) has a squared off look like some other vert concepts I've seen.
I will agree that the whole car looks as though it was widened a little. Did you do anything to it?
By the way, he's not leaning on the invisi-roof. He's swinging his arm across the front and saying "Hot damn, this is one firecracker of an autee-mobile!"