Imagine a world where you go on line, create a building, a boat or anything your brain fantasizes and order it..
Then a swarm of artificial spiders is building it in minutes...
Welcome to the 21st century, the challenge of anything we imagine and we are...
http://qz.com/672708/siemens-is-building-a-swarm-of-robot-spiders-to-3d-print-objects-together/