Finnish engineering student and 3D designer Miska Karvonen wanted to upgrade the standard GoPiGo robot kit and create his Rasperry Pi Spy Tank. Unsatisfied with the design of the basic model of robotic kit, Karvonen added a Raspberry camera, a WiFi Dongle, and an SD card with a GoPiGo image to an existing 3D printable tank design, the Drogerdy - Raspberry Pi Controlled Tank Bot by Australian designer Tim Clark, included some LEDs for lighting, and then printed out all the parts with his Printrbot makers kit. Made from PLA, the robot is cool indeed. You can read the whole story and find links to a detail build sheet here: http://3dprint.com/68045/raspberry-pi-spy-tank/