Two years ago when I saw Google car in front of me about to pass, I sure as hell opened the window and give it a bird, Maverick style. And sure as hell some 6 months later punching the address of my encounter, there I was in my car, with blurred face showing a middle finger that was surprisingly not blurred. So I showed it to all my friends all proud and stuff. Sadly a few months later the photo was replaced by I guess another drive-by. I imagine for many reasons since they already have a car in place, I'm sure they take few takes when passing by and someone must have reported me.

Well they knew the photo had a face, so maybe their algorithms simply prefer photos without people. There's plenty of reasons why you should prefer a photo of a location without a person, even if blurred - this being one of them!