Hm, the Zonda is a really interesting car with some crazy lines, making it hard to transform the shapes correctly into LEGO. I may get stoned when I say that I don't like the rear. Well, it looks absolutely right directly from behind, but when looking at it from the side, the whole rear looks wrong angled...I hope you get my point? Take a look at this photo:
http://www.netcarshow.com/pagani/2006-zonda_roadster_f/800x600/wallpaper_04.htm Anyway, your creation is easily a 5/5. Cheers, Jens