200 Eleventh Avenue (website includes a video of how the sky garage system works) is a 56,000 sf luxury condominium tower in Chelsea by Selldorf Architects. Even though, according to the architects, "the base of the building is clad with glazed terra cotta panels, and the tower has a custom-fabricated curvilinear stainless steel 'rain screen' system," it's the relatively invisible sky garages that steal the show.
Renderings by Hayes Davidson
The sky garages recall Chicago's former Jewelers' Building (now going by the distinguished 35 Wacker Drive). Chicago Architecture.info explains:
[The Jewelers' Building] was created for the city’s diamond merchants and had an unusual security procedure – to reduce the chances that its tenants would be mugged walking between their cars and their offices, the building featured a central auto elevator. People would drive into this elevator and it would take them to the floor where their office was. Jewelers loaded down with precious stones and metals wouldn’t have to be exposed to a potentially hostile exterior environment. Though innovative, it was an arrangement that didn’t last very long. By the Second World War the auto elevators were abandoned and decked over to make more office space.This description might actually fit 200 Eleventh Avenue, where owners of $16 million condos won't have to worry about being mugged or be exposed to the potentially hostile exterior environment of Chelsea and the rest of Manhattan!
Thanks to Joy for the head's up on the article and the Jewelers' Building!