It's true that owners of Audis, Beamers and Mercs are always on the alert for anyone scratching or marking their pride-and-joy. Us plebs in our pitiful Vauxhall Meriva for example.
If we're parked next to one of these gems, I always slide out of my car door like an eel, trying not to even touch their bodywork with my coat.
I can always read their thought bubbles though:-
"Hey! You toucha my car, I slappa your fice!"