Lego machine made of Lego parts builds Lego cars.  Awesome.  This shows the engineering and design know-how of everyday intelligent individuals. I have always been into robotics, and marveled at the complex machines in the electronic manufacture industry. I always wanted to make something so complicated, but most of the building materials for big machines are way too expensive, or hard to work with. Kudos to him for using Legos, a cheap and widely available resource. I might have to look for the thousands of Legos, K’nex, and erector set pieces I owned as a child.