Take a look at this
video on MPG from Duke university!
Can somebody explain to me, in plain English, what these guys are saying?
When is a MPG not a MPG? When people talk in riddles!
MPG calculation goes like this, fellas: you fills up your car, you presses the trip counter to zero, you drives a while, you fills up again and you does your arithmetic.
Or else you talk like you guys, example:
Man gets home says to wife,
"I saved a dollar by running home behind the bus!
"You idiot! she replies. You should have saved $20 and run home behind a taxi!"