Maybe because you don't want the cost, complexity, and weight of having two completely different drive trains? As chevy shows with the CotY you can make a hell

Maybe because you don't want the cost, complexity, and weight of having two completely different drive trains? As chevy shows with the CotY you can make a hell of a car if you design a car for electric and invest the weight/savings in the better electric car. Why carry around a complete drive train for the 5% case when that you could invest in the electric side for the 100% case.