The currency of euro is only for members of EU.If the US is going to convert to the Metric system, why not just convert our currency to the EURO also?
This web is also not serious, because we don't need an official prototype of kilogram to use with other units, a meter is enough to convert all units.Its because metric is based on silly things, and tends to fluctuate
for example the weight of a kilogram is shrinking:
Official prototype of kilogram mysteriously losing weight - CNN.com
therefore everyone is getting fatter who wants that?
To find a kilogram : 1 decimeter3 of water or 0.001 meter3 (0.1 m x 0.1 m x 0.1 m) ---> 1 kilogram