I don't know if the one that you saw was real or not, but all the one's that I've seen are real. I've never seen one on the road though, except when pulling into our building.
If it had the FR200 body kit, it would require the unique suspension pieces and bigger wheels to properly fill the flared fenders. Without the turbo motor, they couldn't properly test the handling, so that would mean this car would be used just for testing the body panels. I really doubt it is simply a cosmetic mule.
If it had manufacturers plates, and was very loud, I'd guess it was real.
Bob
