Dollars? We don't need no stinkin' dollars!

Whilst the news that Iran has stopped selling oil in US dollars and switched primarily to Euros should come as no surprise, it is intended no doubt to further enrage the neo-con beast, should this change be followed by other large oil exporting states it will put more and more pressure on the greenback as demand for it declines and the spectre of the US's trade and government deficits loom large. Am I bid $2.20 for a pound?