Re: cash
I think Interac rivals universal health care for importance and I'm surprised I don't hear more about it. We just take it for granted and nobody else really cares what Canada is up to. If you want to see what a cashless society could look like then look into Canada.
Apparently this is because Canadian banks don't tend to issue regular Visa/Mastercard debit cards unlike most of the rest of the world. In Europe, (virtually) everyone with a current account will have either a Visa Debit (Delta) card or a Maestro card with similar ubiquity.