What happened to other robotic devices, such as the Google Keyhole satellite program, or the Google Print project?
We still use specific robotic devices to record specific information. For example, our Google Robots do not surf the web, yet; this part of the equation is still left to the so-called Googlebot. Also, we still take satellite snapshots of the earth. However, it already shows that Google Robots give a far more detailed 3-dimensional picture of the earth they’re walking.