Dear D-type, you are right, it is Goodwood. But, as you wish, i won't you award with the point.
But I have to answer your criticism about fairness:
1) You may have been right, if I would have details photoshopped away, relevant to answer my questions correctly. But: I DIDN'T! See the original picture attached. There is no landscape visible, nothing that shows the race track, where the trial took place! Only persons and the service truck. Both could be everywhere!
2) 'shamrock' didn't answer correctly (wrong written name). Nevertheless I locked for him.
3) 'shamrock' answered the next questions with a wrong year (1956). Absolutely impossible, as the car has been ready very late winter 1956/57 for tests, and (to my knowledge) never in Silverstone
4) Again I had still locked for him, for a next trial
5) 'Willie McCrum' answered with 'Kirkistown'. Where the car did the first trials. Then I gave him an very obvious hint. This hint made solving the puzzle as easy as anyway possible!
6) In your reckoning, what's more to do?
7) Your accusation was neither fair nor appropriate. Check the original photo and then tell me the 'Goodwood-relevant-details', which you cannot find on my photoshopped puzzle-picture.
Wait for your fair answer and hopefully enjoy once your puzzles, fromwien