Google Maps – Name of the Street View Icon

There exists a Streetview API that you can make use of

http://maps.googleapis.com/maps/api/streetview?size=400x400&location=40.720032,%20-73.988354&fov=90&heading=235&pitch=10&sensor=false

It seems that website stores street number in it's own database along with the coordinates. And it's using it's own search engine, not Google's. So if your search hit a street number and street, it just fetches the coordinate and points it on the map. In google maps, you can only search for street number if it's in the place address.