“Carbon-free whale blubber.”
Been done. Cummins Diesel furnished the engines for an arctic expedition once and test ran them on whale oil. The idea was if the explorers ran out of fuel they could harvest their own.
LOL! Well, knock me down with a feather. I thought that would be verbotem and the tree-huggers would rather curl up in a fetal position and freeze to death rather than harm a whale.