I guess that will take a long way process before we can experience bitcoin to be a new era of currency. With todays ongoing technology development worldwide, we cant stop the advance plans for our government on how we can generate better ideas just to fulfill the needs and wants for everybody in this world. With regards to dollar I dont think so that will be surpassed easily, because its a strong currency in fiat systems and bitcoin is a digital currency with the top most demand from investors worldwide with regards to cypto currency market.