The Multiparker MP 710

All of Slate's tech stories lately have involved cars (and yes, we know it's partly our fault), and the latest is about the Multiparker MP 710, an automated robotic car parking system for public garages:

The underground vault that stores the car is arranged like a closet outfitted with a pair of giant shoe racks. The
cars are stacked in columns four-high along two walls. Similar to a subway, two tracks and one electrified rail carry
each vehicle to its steel cubby hole. After the car-bearing pallet drops into the vault, it moves laterally to the
closest size-appropriate space. The taller top row is reserved for SUVs, the bottom three for cars. Once the car
sidles up to its berth, an empty pallet that's sitting in the space slides out, and the car-bearing pallet slides in.
The empty pallet moves up to replace the one that vacated the parking room. The whole process takes about a minute
and a half.