system
A chat on subreddit /r/pcmasterrace
human
We legit use miles and miles per hour for driving, feet and inches for height but gallons aren’t a thing any more on petrol station forecourts. It’s been litres for years. We are almost totally metric now apart from archaic stuff like furlongs for horse racing
gpt
Distance in miles, fuel economy in miles per gallon, yet we buy our fuel in litres.