When I was a kid, my favorite toys were Legos. Many a rainy day was spent building planes and spaceships, supercars and battleships, medieval castles and futuristic moon bases. But I never made anything like this. Constructed using Lego's Mindstorm Robots, this is an autonomous production line capable of building Lego cars. It can even select the color of the blocks used. Consider my little Lego geek mind blown.