What's the purpose of it?,(reply>), Acb Thr there's been little cases of elevator accidents due to the fact that elevators have many safety lines.,(reply>), An interesting note, this is actually safe than cables if its maintained to a reasonable degree. When you get the car moving downwards in freefall, the magnets on the cars actually introduce an opposing magnetic field in the track, which will slow the car down. Essentially, the interaction causes the car to sap its own energy by generating electricity. This limits the top speed of the elevator considerably in the case of safety failure and actually allows the car to generate electity while traveling down normally that the building can use for other things. Also lets you have a ton of cars in the same shaft and have shafts of unlimited height, which is pretty handy for tall buildings. Means you can get away with only 4 elevator shafts in the whole building, almost irrespective of height.,(reply>), More flexibility for architects to get creative about transporting people within a building.,(reply>), you dont need a rope, so higher elevators are now possible,(reply>), David Cox extra cabins. You could put dozens of cabs on each shaft, run one up, one down, and actually get loading done off to the side.