So long, Nike. The next big thing in the world of shoes might not come from an overseas factory but from a printer. A 3D printer, that is. Designer and engineer Luc Fusaro is working on creating a pair of shoes that can be manufactured from the comfort of a 3D printer. What's special about his is the inclusion of spikes, which make for a more athletic appeal and distinguish them from the existing slate of 3D-printed shoes.