German company ThyssenKrupp may solve that problem by trading cables for tracks that employ magnetic levitation, or maglev. Unconstrained by a linear pulley system, the cars--to be tested in Germany next year--will travel higher and in new directions, moving horizontally and even diagonally. The system, called Multi, may help make possible buildings of unprecedented size and energy efficiency, like this conceptual Edison Tower. To learn how the elevator works click here.
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