It always confuses me as an American as to why you guys use a "hybrid" system of mix 'n' match. I've been living here for about a year now full time, I still can't get my head around why some stuff is in metric while others are still in imperial units. MPH, pounds, degree Celsius, pints, stone (which I have no idea about), kilos, inches, cm etc., etc. We Americans stuck with the imperial system for everyday use (for better or worse), while the Canucks up north went completely metric. Would you please make up your mind already? While I am glad that your speed signs are still in MPH, I am only now getting the hang of thinking in Deg.Celcius. Also, it doesn't help that your vehicle fuel consumption figures are published in MPG(UK), while the fuel itself is sold in liters. And even those UK gallons have to be converted into US gallons while explaining to my friends back in the states as to the fuel economy figures of my car. Sigh! You certainly start to do a lot of mental math, living as an American in this country. p.s: The funny thing is I have a degree in engineering (now pretty much all of it is taught in metric), which means while I feel weird doing work calculations in imperial, I somehow can't naturally get a feel of metric stuff in real life. Like KPH, Degree Celsius etc. I have to do a reverse calculation.