Google Maps - Street View

If you look at the google maps street view of our house, and you position the camera in the center of the nearest intersection and swing the camera around to our house, you can see me walking on the sidewalk, going to meet Kristin after school.

If you move the camera one position in any direction though, I'm not there anymore, which means they must have updated some positions but not others? I can spend hours looking at Google Maps Street View. If I go look at busier streets like Main Street, I can recognize familiar cars. If I Google Map Kristin's school, there's a car driving by that belongs to the person a few doors down, that type of thing.