I doubt anyone that purchases this vehicle has any interest in saving gasoline. For many it would be the newest toy on the block for others it would be about global warming.For whom are you saving all that gasoline?What about gasoline, diesel or CNG powered electric cars?
Not to mistaken with hybrids that need all the batteries, but cars that have a small internal combustion engine that power an electric motor.
All possible technologies need to be pursued.
As a Prius owner I can tell you that hybrid technology saves a lot of gasoline.