Here is Awesome Google Extension about Google Drive as you know Google drive is very fast growing and best Cloud service it allow you to sync your mobile & PC files to Google drive. but here is an extension that allow you to save your every attachment to Google Drive.
Google Chrome Extension Download Here
I like this extension too much because it save my time if i have to download a heavy or big size achievement then it will save time to download file.
This extension allow you to save web content directly to Google Drive through a browser action or context menu. You can save documents, images, and HTML5 audio and video all by right clicking and selecting ‘Save to Google Drive’. You can save the currently viewed page using the ‘Save to Google Drive’ browser action. The format of saved HTML pages can be controlled with the options page (Choice of Entire image (default), Visible image, Raw HTML, MHTML, or Google Doc). You can automatically convert Microsoft Office files or comma separated files to Google docs format.