Am I wrong to think that the Google Drive is external to your PC, on a google server somewhere, and that being the whole point of it. if you have duplicated the creation of your file, each is seperate and conceivably ,on a seperate server . This would enable you to "backup" to each, and therefore, be doublely protected. If disaster strikes, or if you seek to do so, you could download the lot to another computer , or enable someone else to do so. I can foresee that in future, the last codecile of one's will would usefully enable the transfer/ deletion or copywrite of all ones works.