Well unsecured consumer debt has technically no legal consequences if it is not paid unless you get permission to garnish wages from a court. Most consumer debt collectors use the “badger and harry” approach of constant phone calls to collect debt.
Secured debt will just take the collateral.
Of course try the high fico score debtors first.
Or just forgive the debt.
Well, yes and no. Most likely its adoption would be where petroleum stations start creating it on site and selling like a carbon neutral gasoline. Energy has to come from somewhere, so it will probably take solar power to store as fomate and sell as fuel