After working at the Googleplex for almost a month now, I have come to greatly appreciate the bike sharing program we have on campus where you can take any Google bike and leave it anywhere on campus as long as it doesn't block an entrance. A new company called Social Bicycles, located in NY, seems to be doing something similar (also reminiscent of Zipcar). With the help of an iPhone app, members of the program can locate bikes around the city.