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This past spring, between 69th Street and 72nd Street on Second Avenue, cages descended every eight hours, five days a week, lowering roughly 50 men in neon vests and hard hats into a deep hole. Overhead, fluorescent bulbs provided a noonish light and yellow ventilation tubes undulated. A cool, roaring wind filled the void and carried the intense aroma of Emulex explosives, an ammonialike, Fourth of July smell. Men with tripods surveyed; men with blowtorches welded; men guiding hoses poured concrete (men outnumber women 100 to 1). They took brief lunch breaks and relieved themselves hastily where and when they could.

Bumsuk Lim, a transportation design professor at Art Center College of Design in Pasadena, California, demands that his students focus on how to move people and goods from point A to point B in an urban setting. One of the concepts borne out of that elegantly simple directive is Deus Ex Machina, designed by former student Jake Loniak. Part exoskeleton, part motorbike, the three-wheeled vehicle runs on lithium-ion batteries boosted by ultracapacitors (which offer better acceleration). Worn almost as a jacket, machine is steered via "muscles" mechanized by pressured air and activated by the driver's gestures. The Deus Ex Machina is projected to top out at 75 mph and is meant to be a sports model among wearable vehicles (note the lack of storage). The concept, Lim says, "solves some of the fundamental mobility issues, but is still the kind of exciting vehicle that people are like, 'I want to try that. I want to go to work in that.' You can't forget the emotional link between the buyer and the vehicle."