Purchasing big ticket items with Bitcoin will get stomped on in many regions in any case, as it is a way of dodging capital gains taxes. Or income tax if you ar

Purchasing big ticket items with Bitcoin will get stomped on in many regions in any case, as it is a way of dodging capital gains taxes. Or income tax if you are paid in bitcoin. Or GST/VAT. Same reason you can't swap a bar of gold for a car. I don't think governments are going to want to track official exchange rates for all the coins, and given coin volatility it probably wouldn't work well in any case.