If you are already using Google Docs, don't be surprised that one day you will see that Google Docs has been renamed to Google Drive. Google Drive is where you can save your files on the cloud. it means you can save and access your files on the cloud as long as you have an internet connection.
as you can see on the photo above from http://wisecom.wordpress.com/2011/09/24/is-this-the-new-google-drive/ its using the Google Docs URL and we can see the Drive word just below a boxy version of Google logo. we can also see Folders here. for more infomation about google drive read this http://techcrunch.com/2011/09/08/google-drive-pic/
image via: wisecom.wordpress.com