More likely we'll have small battery packs based on this technology to charge at home, store in the trunk and use on very long range journeys. What we're using

More likely we'll have small battery packs based on this technology to charge at home, store in the trunk and use on very long range journeys. What we're using small gas cans for now. Refueling someone else in an emergency won't be a common use case by definition. Selling the extra capacity at the corner of the street not common because it's not our job and we don't have time for that. Maybe if every parking place has its own individual charging station people will plug in their cars in output mode, set how much they are selling and the network will buy it. This assumes that energy at home is cheaper than the price paid by the network.