no cables seems scary!,(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>), it's probably safer than the cables.<br><br>you see at a certain length the cables themselfs become so heavy that they can't suport themselfs anymore, from this point on having no cable is the better solution.