What's the purpose of having an elevator go sideways?,(reply>), The elevator problem on modern skyscrapers creates congestion. 200 floors would take 20 elevator shafts or more. Rather have 4-8 shafts that each run 5 boxes.,(reply>), You could have very tall skyscrapers with several cabins running in the same vertical shaft but still service the full height of the building, thus increasing capacity and speed.