Of course everything is relative – but when a really large number of parking places is involved, selection of a system from this range is recommended. Here, storage and retrieval units or shuttles move vehicles along all three motion axes. The various versions thus cater to a wide range of different requirements, the purpose of which is always to gain the maximum amount of space in order to be able to accommodate yet bigger amounts of vehicles, via the lateral and vertical stacking of said vehicles to form a parking rack.