[yovagoyu]

Gas is a huge deal in large passenger planes where instead of miles per gallon, they actually measure efficiency in gallons per mile.

The 747 for example eats about 1 gallon per second (~3600 gallons per hour) according to this source: https://science.howstuffworks.com/transport/flight/modern/qu...

[jeltz]

We measure fuel efficiency for cars in "liters per 10 km" in my country.