in aviation its even more fun..
since in USA it is mostly based on maritime navigation, knots are used, and a nautical mile is longer than a imperial mile (if you are in sweden 1 mile i think is 10km..)
small planes gallons/nautical miles used for "fuel consumption" but for larger planes lbs/miles used (mostly because the weight of fuel change depending temp and meteorological pressure).. can cause confusion at the pump and it has caused a few actual crashes....
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"Obscenity is whatever gives the Judge an erection." -- Author Unknown
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