Google Drive also launches with an API(googledevelopers.blogspot.com)
googledevelopers.blogspot.com
Google Drive also launches with an API
http://googledevelopers.blogspot.com/2012/04/introducing-google-drive-and-google.html
http://googledevelopers.blogspot.com/2012/04/introducing-google-drive-and-google.html
Direct link to the SDK