https://www.youtube.com/watch?v=2X6RuoAR9Ok
Guardbot Features
The GuardBot is a robotic platform powered by EaglePicher batteries that hosts cameras and sensors in a sealed sphere.
It can be remotely controlled by an operator or programmed to navigate by GPS.
It moves in virtual silence. As a mobile sensor platform the GuardBot combines land and water functionality with dual payload capability (two data streams).
Find more: http://www.guardbot.org