A University of Southern California engineering professor has found a way to build housing with a giant 3D printer, including the concrete foundation. The professor explained the process in a speech at a conference (which you can watch via the link below - start at 4:30 to see the animation demo). In the video,  the professor demonstrates how the machine lays down a concrete foundation, puts up walls, even inserts wiring and plumbing and eventually constructs an entire building. And you thought USC only played football.