Hey that's good to know! But I do know in my own circle of car friends we always talk in US MPG. Another example why life is so much easier with km's and litres
I have seen pictures of older milk or oil jugs labeled in all 3 units. I think that's quite nice that you just learn all those units eventually without trying too hard.
Slightly off topic, but relating to all different units/systems co-existing in Canada: I never got to learn French in grade school as I was already busy learning English first (ESL). But whenever we visit France now for example, I randomly remember the French words I saw on the bilingual packaging from Canada. So it's a very slow process, but it appears I'm learning by osmosis too

Also the joke about Canadians who "write like Brits and speak like Americans with enough French thrown in to cause confusion" is very true, I cringe whenever someone says "fillet" here...