the-missile:
Gnil:
 

Would he be staying at the hotel Tiergarten, a pretty simple place ? 

The amount of work and money spent to change this Turbo into a kind of Gt3 RS is unbelievable .  The only reason I can see is to absolutely want to have the AWD setting . 

RC in disguise Smiley an AWD man

I agree, this must be RC Smiley

Joking aside, I do not see Frederik as a guy who would spend this kind of money on turning a turbo into a track car. I have never seen him participate in any track events. His brother is racing a historic Lotus Cortina, but I cannot imagine this being him either. 

I have talked to some "friends" back in DK and they know the car, but not who owns it. I am sure that if it belonged to a royal, they would know.

I am sure Frederik would not mind to stay in a simple place. He seems to be a guy who is more concerned about being in good company, than being seen in the "right" places.