"SOme people say it will be to expensive or complicated to be a sucess but I'm not so sure about that. <br>You can have multiple cabins in one shaft which reduces the footprint of the infrastructure. That alone is worth a lot of money. There are no moving parts in the shaft so most likely it will hold up forever and the cabins can be called to a maintainance parking spot with no need to stop elevator operations. You could make them work similar to old paternoster elevators worked and increase the capacity of one shaft by A LOT.<br>With cable elevators a counter weight needs to go up if the elevator goes down"," not so here. On the way back down you could therefore recover some energy from the system. <br>That's all applicable for small to medium sized Buildings already without even tapping much of the sideway potential. <br><br><br>In Combination with cleaning Robots", Transporter robots etc.," the potential to implement point to point connections all over the building is quite interesting.<br>You could use some of the carts as goods transporters during the day and put them in the main shafts for people during the rushhour in the morning and evening and so on.<br>You could automatically deliver stuff all over the building without the need for robots driving through the corridors."