As of time of writing, I think you can't mount your google drive locally. The best bet is to use a program like google-drive-ocamlfuse, which allows you to access your locals locally at the same time sync said files if they weren't created via Google Drive.
Please note that requires you to use a ppa and use of the terminal.
sudo add-apt-repository ppa:alessandro-strada/ppa
sudo apt update && sudo apt install google-drive-ocamlfuse
Setting your Google Drive Folder
Make sure you have a web browser for this step.
- Follow the prompts that you will get.
mkdir -v ~/myGoogleDrive this will allow you to create a local copy of your Google Drive folders
google-drive-ocamlfuse ~/myGoogleDrive this will tell the program to mount the local copy
df -h to make sure it's mounted or you can
cd to said folder and
ls to see the contents