Stephen J

Borrowing from early corporate ventures into electric cars, perhaps using quick change battery pack assemblies in the form of detachable pods or underside strakes (close to the fuselage to reduce wing spar stress and drag). These might work adequately for a daytime (VFR) sports flyer who could carry multiple charged replacements in the same trailer that brought the craft to the field. While he is flying, the same trailer could have an onboard generator to recharge depleted packs.