This battery thing is a good point, I have noticed this that the car becomes a pain if the battery is on its last leg. On the motorway, I was testing the car and as soon as the battery ran out of juice, the vehicle had difficulty crossing 170kmh, whereas using steady acceleration and utilizing less battery charge, I easily crossed 175kmh. These sort of things have been improved I supposed. Oh, since you as well had both, which has better ground clearance?