Ugh, we're not even. We're using the US customary system, which uses the British words but aren't the same values as British Imperial values. They're actually pegged to the metric system, so if the definition of a kilometer changed, so would the definition of a mile.
We're using metric with extra steps. Not to mention certain products are already in metric, and everything else has the metric on it already.
But never with taking away the bills. Get rid if the bills and force the coins and voilà.