Powerlace tries to bring the auto-lacing shoe to life

Even after all these years, it seems that Marty McFly's gadgets still inhabit the dreams of geeks, inventors, tinkerers, and visionaries, from the near-impossible time-traveling car, to the almost possible hoverboards, and now to self-tying shoe laces. Former Nike designer Tinker Hatfield, who conceived Marty's "power laces", predicted that this type of footwear would be possible by 2015. Given the …