This is a very much needed plugin, thanks for working on it, it will be very useful.
The setup worked for me, it says: "Authorization to use Google Drive has been granted."
I was able to create manual backup, I can see the zipped backup file via FTP, and the log file says everything went fine : "Archive 1339724301.zip uploaded to Google Drive in 37.38 seconds". However I don't see the file on Google Drive. I haven't specified any folder, so they soot be in the root, and the Drive is empty otherwise. I tried to log in/out, I tested that I am able to up and download to the same Drive, but I don't see the backups.