I don't see anything wrong in measuring gallons per mile and measuring in yards and other non-metric systems when it's something local. Maybe it's convinient if

I don't see anything wrong in measuring gallons per mile and measuring in yards and other non-metric systems when it's something local. Maybe it's convinient if you live somewhere where everybody accustomed to that. It's when I see articles about space exploration with miles and pounds - it feels wrong.