Since I plan on using my vehicle for a work commute most of my driving will be at 100 km/h. Aerodynamics will have a significant impact on the range of the vehicle. Whatever I do needs to be light weight as my vehicle will also be a bit weight challenged and operating quite close to it's GVWR. I'm considering degrilling the front (no point in all that cooling drag without an ICE), fitting a belly pan just under the engine (motor) compartment, fitting skirts to the rear wheel arches and turbulators over the rear window. I will try to verify each aero mod as an improvement somehow such as steady state motor amps on a known piece of road in calm conditions. The function of the turbulators could be verified by taping a ribbon to the roof of the car and driving down the road with a chase car to monitor the behaviour of the ribbon. A full belly pan would certainly help the aerodynamics but would weigh quite a bit.