Alright, Google can't view your keys. But, you need Google to view them, right? What happens if Google suspends your account, or decides within the next 5 years to shut down Drive?

But, you still have to keep those keys somewhere electronically, right? Do what LoyceV recommended you above and write down the seed phrase in a piece of paper or in a stainless steel. You, then, won't worry for drive failures neither fires or floods. (If done using the latter)