this is really interesting. there is a strange and rather obvious outof focus "sphere" shape that has shown up on a significant number of googlemaps pictures - see it for yourself. ppl are hypothisising on what it could possibly be.
at first glance, it looks like a UFO
![Wink ;)](./images/smilies/icon_wink.gif)
personally i'm leaning towards the "something on the lense" hypothesis.
this one though has me confused - because it's not a full circle.