Jozo, iz Wikipedije: Most of government, industry and commerce use metric units, but imperial units are officially used to specify journey distances, vehicle speeds and the sizes of returnable milk containers, beer and cider glasses (though fresh milk is often still sold in multiples of pints, with the metric equivalent also marked). Imperial units are also often used informally to describe body measurements and vehicle fuel economy. In schools, the use of metric units is the norm; however, schools must also teach children about imperial units that remain in common usage in the UK.
Amerikanci su između 1975. i 1981. pokušali prijeći na metrički sustav, a onda im se desio Reagan. https://upload.wikimedia.org/wikipedia/commons/7/77/SpeedLimit-CoralRidge-MiKm-May1992_cropped.jpg https://upload.wikimedia.org/wikipedia/en/f/f5/Metric_is_coming.jpg