But here is my question....is this actually practical??? Wouldn't a simple up and down elevator be easier to add to a building and just as effective???<br><br>And the space needed to allow this elevator to move could instead be used for MORE elevators...  so while it's cool that it can be done... is it really worth buying???,(reply>), Ah but you missed that one elevator shift can currently be only used by one elevator. With this you can put as many of them into it as you want. If you now have two shafts one for things that go up and one for those that go down you could drastically increase capacity