Use Google Drive API with cloud storage

[user2798889 via StackOverflow]

I want to use some features of the Drive API with files stored in Google Cloud storage such as Thumbnail generation. The only way I can see it working is copying it to Google Drive for my account and getting the tasks done. Any other suggestions on how can it be done?

Please DO NOT REPLY directly to this email but go to StackOverflow:
http://stackoverflow.com/questions/28455103/use-google-drive-api-with-cloud-storage