Maybe at that point it's easier to just try supersized hybrid for mainstream airliner. We already see China showing mockup/prototype of small turbine hybrid, now it's time to make it larger & more powerful.
Considering other hybrid vehicles have shown decent efficiency gains from the switch, planes might get the extra efficiency they have always chased that way too.
Considering other hybrid vehicles have shown decent efficiency gains from the switch, planes might get the extra efficiency they have always chased that way too.