i personally dont see it happening (or, if the dollar was replaced, all currency would be replaced by a new form of a global credit system).
but, if the US did suffer a "hyper-inflationary economic collapse" i'd say the YAUN, the euro would be on it's butt as well, so i'd have to say the winner would be CHINA (then possibly INDIA).....
has anyone been watching brazil? they seem to have thier stuff together...its one of the countries thats been kinda "cruising thru" the "global recession"....i'd really like to be there in 2016...better start making reservations.....ummmmmm brazil.......