This is actually highly impressive when you consider the operational implications of such a system. It's like comparing Personal Rapid Transit (PRT) to a traditional subway. This allows elevators to share a single elevator shaft and not block each other's progress, they can "pull off" like exiting a highway at the desired floor and stop, while allowing other elevators to continue past. Almost like adding sidings and crossovers to a single track railway. This could have big implications for future elevator design, currently tall buildings need such a large number of elevator shafts it becomes impractical and takes up enormous floor space on the lower floors