The bike stand in 1523 is a typical Google bike stand that you see all over the Bay Area, (Sunnyvale, Mountain View, Cupertino)...and is for the free Google Bikes given for Googeers to ride around the GoogleComplexs in the area.
There is also a fleet of GooleBusses that transport Googlers from GoolePlex in the Bay Area to GoogleHomes in San Francisco.
For those who don’t know or have friends who work there,Google is the ultimate big brother operation. Everything they do “for” employees is designed to control and monitor every little thing their employees do 24/7 ... Free laundry etc - you can checkout but you can never leave. The transportation aspect of this is immense - they of course supply wi fi everywhere but nothing is free from control ... IMO ;)