The GoPiGo is a complete kit to build your own robot car. GoPiGo works at the level you’re at — whether you are a parent looking for a smart, fun weekend project to do with your kid, a teacher looking for a way to increase engagement in your science course, or a grad student in need of a platform for your robotics research that requires mobility.
link: http://www.dexterindustries.com/gopigo/