Google already has its own currency
It is called Google Pay, Google Play Credits...
It is not a cryptocurrency , neither uses blockchain tech or whatever. It is like a PayPal
http://Https://pay.Google.comBitcoin has a different proposal
Why do you think it is a currency? They only integrate payments into their apps, and they use the entire currency present in the world to pay depending on the location of each country. You seem to have confused the currency and payment applications.