Watch Apple Park's massive motorized cafeteria doors open in this video

Apple CEO Tim Cook shared rare glimpse at Apple Park's inner workings on Wednesday with video showing off the cafeteria doors, two massive, motorized floor-to-ceiling glass panels that slide open for natural building ventilation...   Cook presented the in tweet, saying, Lunchtime at Apple Park just got lot more exciting...   The twin doors were among the first features to be installed at Apple Park's main spaceship building, and protection from the elements.   the glass doors cover significant portion of the structure's perimeter..   Whether the doors were prior to this week is unknown, though Apple has touted the in the past.   The company offers peek at the in motion as part of ARKit presentation at its Apple Park visitor center..   San Francisco flagship, for example, achieves wide-open effect with sliding glass doors similar to those employed at Apple Park.   Construction of the massive campus began in 2014 with the demolition of standing structures on the site once owned by Hewlett-Packard..   Apple revealed Apple Park saying at the time it expected all 12,000 employees to be moved in by year's end.   Workers were still making February though the move-in process has since completed...   Read more