I guess there will always be those who strand themselves through inattention, and perhaps there's room for improvement on that front. I wonder how much cost it would add to a vehicle to allow car-to-car "supercharging?" Drive a car with a full charge to one that is dangerously low, connect a cable between the two, and equalize their charge? You can already draw more than enough current from the battery to match the 90kW draw for rapid charging and there's a handy external port on the car designed to enable DC, bypassing the AC chargers...