I tried to organise this last year but my car was written off and I couldn't drive, but just wondered how much interest there would be in this....
Essentially it's a 5 day trip to Wolfsburg and Nurburgring. It would involve a trip round the factory and a few laps of the nurburgring. IIRC it worked out about £200 per car (based on two people in a car) + petrol.
Like I say, just seeing if there's much interest...