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  1. The savings from a more energy-dense fuel don’t stop with there: aircraft fuel consumption is linked to weight, especially during takeoff. That’s why jets usually take on only the fuel they expect to need (plus a reserve for unexpected contingencies). They don’t “fill up” unless they really need to.

    A more energy-dense fuel requires less fuel weight and therefore less fuel to haul the fuel you’ll be using. The same would be true in trucking, of course, but not to the same degree.

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