As Wikipedia describes, "Google Street View is a feature of Google Maps and Google Earth that provides 360° horizontal and 290° vertical panoramic views from a row of positions along the street for many streets in the world."
The images are taken from a car that drives around various streets with multiple cameras attached. The images are stitched together to show a first-person view.
So if you were coming out of your house and noticed the Streetview car driving down your street, getting ready to photograph your house as it drives by, what would be your first reaction? Perhaps you'd run inside to avoid being caught on film, or maybe you'd wave.
For this gentleman, he had other ideas in mind. See Streetview map below.