like some said in that forum.. could Citroen be tempted by their own version since they now own Opel ?
( but as another one said, if it was a Citroen concept, it would be in camouflage mode )

But there is also that saying that goes like this : the best way to hide something is to leave it in plain sight...

still belive in a funny guy who got some Citroen badges for Xmas ( or his birthday ) and found a way to use them..