Hitachi unveils elevator cars that circulate in loop

Hitachi Ltd. said Wednesday it has developed a new elevator system in which more than two cars can run, sharing the space conventionally used by two.

In the new system, each car moves sideways after reaching the top floor and then descends before shifting sideways again at the bottom to move up as each car is attached to a single cable loop, Hitachi officials said.

Full article at, TMCnet.