We still measure in the imperial system, so based on that, this will hit the US in a 100 years or so. 😁,(reply>), @Cuvtixo I was being hopeful.  It might take 1000 years.  The Imperial system is a bunch of random measures just thrown together so variety is not surprising.,(reply>), isn't having not yet switched to metric, evidence that we in America never will, rather than it would take 100 years? I think long ago Tom did an interesting video about how the US, Canadian and old UK "Imperial" measures can be all different. Many US measurements, and the very idea of a legal national standard, were made long after independence. It's not like there's just two standards: US "imperial" vs metric. There are several different "Imperial" measures. Canada's used to be slightly different than UK, and US. In the Turks &amp; Caicos Islands, both the U.S. gallon and imperial gallon are used, due to an increase in tax duties which was disguised by levying the same duty on the U.S. gallon (3.79 L) as was previously levied on the UK Imperial gallon (4.55 L)