You've still got two complete power systems, electric and gasoline. The BMW i3 is available with a range extender option (a motorcycle engine with a generator),

You've still got two complete power systems, electric and gasoline. The BMW i3 is available with a range extender option (a motorcycle engine with a generator), but it adds about $4,000 to the base price and significantly increases the servicing costs. That's not a dealbreaker on a $40,000 car, but it does become a significant issue if we're aiming to get EVs down to the price point of a Honda Civic.