4hr or longer would only require 110 V and less people would hurt themselves In Canada a lot of businesses have plugs for winter time use so there is no shortage of outlets already in place and the transformer is lighter when going from 110V to 48V and the odds are newer e-motors.You should be able to charge a car where there is a 220V electrical service, which is anywhere that has an electric stove or electric clothes drier. Those special charging stations give you a "rapid" charge but you can achieve the same thing plugging in at home and charging overnight.
Perhaps the trucks and vans will have something like a 220V motor. One style that shows promise is the permanent magnet design where the magnets are replaced with electric magnets. (more or less an alternator made into an engine when it is fed a bit of power and then it runs off the power it produces) There are a few vids out on this design.