I am trying it imagine what this would look like. Would it have some kind of shaft in which the cars would glide up? If so, would that shaft be a solid structure, rising like the tallest skyscraper in the world, vulnerable to the elements, both natural and human? What happens to the lines/cars once they leave our atmosphere or would they? How would they keep them aligned with a space docking unit? Sorry if this seems pedestrian, but I have a vision or elevator cars whipping around at the end of "nanotube lines," tossing around because the orbit of the docking unit has gone out of whack or something. Help me understand how this would work, please? Thanks!