Not understand why a inverter could not be used(built in auto) or as an extention(like a battery charger today)..to allow 110v(house current) to charge the Auto batteries and not..NOT rely on a Charging station nor have to have something SPECIAL be setup at your house..Sounds like someone is wanting to replace GAS stations with CHARGING stations ... and I do understand there is a problem on type and costs of batteries.and also the diff. between DC vs AC motor's..