and for the RAZ, look here
http://www.raceabout.fi/visuals_photos.php#

I don't think that FX0 is inspired by an Opel Vectra, just see the pictures :
http://www.kris.1000lecie.pl/a ... a%20Accord%20Type%20R.jpg
http://www.purehonda.com/cool/euro/tr1.jpg
I think FX0 is inspired by Honda Accord Type R, in white really looks like to the Type R
And for the RB4, i think that is a mix between Toyota Supra(the front of the car) and Mitsubishi FTO(the rear of the car). =>
http://www.vikash.info/fto/gallery/images/rear01_1280.jpg
Same rear ! no?