1) Run the following command in your terminal

sudo add-apt-repository ppa:invernizzi/google-docs-fs
sudo apt-get update
sudo apt-get install google-docs-fs
2) Once the installation is complete, logout and login again
3) Open Nautilus and Create a folder named "Drive" in your Home Folder

4) Open your terminal, and type

gmount Drive Táto e-mailová adresa je chránená pred spamovacími robotmi. Na jej zobrazenie potrebujete mať nainštalovaný JavaScript.
replace gdrive with your Google Drive username
5) Enter your Google Drive Password
You now have your Google Drive mounted in Ubuntu. This is unofficial but usable before Google releases an officical app for Google Drive.

Link: http://www.digitalfeets.com/2012/05/how-to-access-google-drive-from-ubuntu.html