We are entering in the new type of economy where price predictions are not possible any more because productivity and prosperity of humanity will rise to the new golden age level. Bitcoin will go to 1 million dollars in 2018 and is being used by central banks as a global stardard ledger - dollar will fade slowly those who buy now will become the new wealthy elite.
I think the dollar will be less used if there is a bank opening up Bitcoin, which makes many people think that it will change everything if Bitcoin is marketed to consumers. It will overwhelm other currencies