... there are plans of stringing up several lift cabs from the same cable, atop each other, so that when people board at Level 8, others can disembark at Level 7. Current technology cannot create cable-free, sidestepping lifts yet, so vertical stacking of some sort or another is better than nothing.
So what happens if somebody gets on at the 8th floor and wants off at the first floor? If there's a car stacked underneath it (and for the sake of argument, there's no basement/parkade level), how do the occupants get to the first floor? Get out and walk down the stairs?