Haven't been following the thread too closely. It seems to all be coming down to this genset trickle charge or combined electric motor and ICE, fixed rpm/all electric transmission/CVT.
If the ICE is a bit puny and dangerous in situations when the battery is depleted why not fit a supercharger boost which could be computer controlled via a kick down of the accelerator to give life saving boost? Very high volumetric efficient engines can squeeze out over 100BHp (75kW) per litre.
