Many central banks and governments are experimenting with cryptocurrency/blockchain. I believe some have gone live with various projects around voting, currency-issuing and accounting.

Notably also, the US government is using USD-pegged crypto currency "USDC" to circumvent governmental corruption in Venezuela, in order to deliver economic aid directly (to intended recipients who weren't receiving it through government-controlled Venezuelan banks):

https://blockchain.news/news/us-government-usdc-stablecoin-o...

Mainstream source: https://finance.yahoo.com/news/us-government-enlists-usdc-gl...

You must be new to the idea of cbdcs. Almost every major country has already planned them