Although it may seem like an impossible task, Google plans on having all known books which is around 130 MILLION books, uploaded to their digital book store “Google Editions”. When this project is completed, which will hopefully happen by the year 2020, Google will have uploaded over 4 billion digital pages as well as 2 trillion words in total! Unlike other online book stores, users won’t need a specific device to read the books such as a Kindle, because all the books are online!
However the progress for Google was slowed down after a major lawsuit in 2010 over copyright infringement that ended in a court settlement of $125,000,000! As of March 2012, Google had uploaded 20 million books! They better hurry if they want to reach their goal. For more info, see the source.