Neil,
I can understand your concern. If I was a high profile character such as you, I would be seriously concerned about all my stalkers and interested members of the public planning the invasion of my privacy and stealing such a valuable car.
Im quite sure you are correct to assume that they will also go to the lengths of using satellite imagery and trawl the internet for pictures of a car worthy of stealing only to select from a cast of thousands, your brief.
May I suggest a few security measures you could take in the meantime to bridge the gap until Google remove the picture, obviously avoiding a very costly and public law suit.
1. Don't park there anymore.
2. Employ a Private Security Firm to provide 24hr round the clock protection of the afore mentioned Brief.
3. Employ a Private Security Firm to provide you with Personal Bodyguards so your security is not compromised.
4. Change your name.
5. Wash your hands.
6. Get a life.
7. Smoke your own rod.