Coming back to this thread since I still like the idea of it.
However, when it comes to the cards I'd say something like "Hypermiling = Safely achieving higher MPG than the EPA figures."
Tips:
1: Learn.
2: Maintain the vehicle.
3: Fill-up all the way (But no "topping off") and track miles-per-gallon.
It's three, but it makes more of a change to work on the bottom line than the top. Without learning, What is there? Without maintaining the vehicle, What is there? Without tracking fuel economy, What is there?
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