On his site Lukasz Kujawa has posted a new tutorial showing you how to perform automated backups to Google Drive of files through their API (using his own library).

Where do you keep backups? I guess that depends on what do you backup. You might have a very clever answer for a business critical data but what about less important content? The best example would be a private blog. It will hurt if you lose your data but the odds are you’re not willing to pay for any reliable storage. [...] There is one reliable storage, which is 100% free and almost everybody have access to it. Yes, I’m talking about Google Drive.

He walks you through the process of setting up your Google Drive account API access and where to find the data you'll need to make the connection. He then links over to his project that makes the backup a simple few lines of code (mostly configuration) of a backup path of your choice out to the remote Google Drive account.