And of course in this country, we've been buying fuel in litres for years, but STILL measure fuel consumption in m.p.GALLON - !![]()
And of course in this country, we've been buying fuel in litres for years, but STILL measure fuel consumption in m.p.GALLON - !![]()
Or with some cars, gallons to the mile!
3 Stones is about 19kg.

Just looked the highway code for stopping distances.
Speed is in mph
Stopping distances in metres
Or in "car lengths"
Gallons/mile is actually an area. As explained by Randall Munroe (xkcd) here: https://what-if.xkcd.com/11/
So you could express fuel efficiency in acres. Here's a link to a handy conversion
https://www.wolframalpha.com/input?i=gallons+per+mile+vs+acres
So 50 miles per gal = 0.02 gal per mile ~= 1.4 x 10^-11 acres
That's 140 nano-acres I think
I always remember people multiplying the price per litre by 4 to get the approximate price per gallon... I wonder if people still do?
And of course now with EVs, they meaure charging in mph.
Made me smile, watching the finish of the Vuelta tonight.
The commentator declared that the stage winner had won by a "country mile"!