Software like Maverick or Get my tracks or other makes it possible: To track the motion of the own car. We are just in front of a total change in our mobility towards plug-in hybrid and electric cars. But what will be the best choice between battery capacity and range extender power? How much electric power would Your car consume? It's not a simple calculation, because electric drive systems are complete difference. Everybody knows, that a car consumes more in city traffic than at a moderate speed on the highway. This can be wrong at electric cars. The Renault Kangoo Cleanova II is listed according to European Driving cycle. 14,4 kWh / 100 km in the city 19,6 kWh / 100 km outside the city. So I will make a simulator for this. Equip different vehicles with different combinations of batteries and range extender and look how this vehicle would perform on Your tracks. So I think on something like choose the tracks, choose vehicle and equipment and an output like 80% electric only 20% with range extender 15 kWh electric power for 100km 1 litre gasoline for the range extender. Compare real consumption of Your gasoline car to simulated consumption of a plug-in hybrid or electric vehicles. Where would be recharge stations best placed, to reduce range extender usage? There are many detail questions about designing our new mobility.