>> We'll have to wait and see whether or not the promised "higher energy density" is more available in the "real world" than the unachievable mileage so prominently advanced by automotive manufacturers following testing promulgated and sanctioned by "our" EPA.
I don't know squat about "swift" fuel, but the energy content of gasoline, kerosene and diesel fuel is directly proportional to the weight (density) of the fuel. John Cooper Skyport Services www.skyportservices.net