Why not a Pulse Detonation to achieve Flight for the first time in an auto/hybird/jet far fewer components than a tradtional jet engine and can be scaled smaller than a jet combined with an Ecoboost engine- then you can relabel the whole thing the orginal name Twin-Force! and with reason ICE and Pulse Detonation Engines or call it Triple Force! getting the synergy of the use of Electric/Pulse/and ICE engines in concert with on another.