It will not quite work, but it does show the problem, my e-bike a cheap one weighs around 24 kg wife's is lighter, and with a 48 volt 12 Ah battery it will take me around 25 miles with some peddling, and it would be more if this area was not so hilly. But the bicycle needs around 4 MPH to balance, does not matter how low you gear it, you can't balance below around 4 MPH, the trike is however better and you can gear it lower, but still 250 watt motor is not really enough, the speed limit of 16 MPH not a problem, but really to use to carry goods one needs around a 500 watt motor, which means it is a motor bike, or trike, so you can't use it on motor traffic free roads.
We see the motor trike and quad being used a lot on farms, the main difference between a 4 x 4 and the quad is the weight, and this is the problem, we have so much weight added to a car or van to stop it being crushed in a crash, that the whole unit is too heavy, and if your going to have a vehicle used at work then health and safety at work means as it stands you need to protect your workers in the event of a crash, if you added the crumple zones to my e-bike I would never be able to lift it onto the train, as it is I can't get it inside the carriage, it has to stay on the veranda outside the main carriage. Except if the one carriage designed for wheel chairs is used.
Between Mold and Ruthin the buses has bike racks, but they were simply not used, so have now been removed, and not allowed a bike inside the bus as in a crash it would wheel up the bus, I know the problems with wheel chairs and the need to strap them down, by folding the bike some will allow them, but it is still a big lump.
To be frank removing the wheels with a standard bike it takes up less room in my car than using the folding e-bike. I will normally carry on the bike rack if not going to leave the car. But folded inside the car less likely to be stolen. And this is a problem, my e-bike has an ignition key, so you can't use the electric without a key, but you can still ride it using the pedals.
Mold bus station had some bike lockers, so you could lock up the bike and go shopping, but Welshpool, and Newtown don't have them, so your looking for a lamp post to lock it to, which often means an obstruction on the pavement.
It is one thing buying a cheap bike from Asda or Halfords at under £200 and using it for shopping, if stolen you have only lost £200, but an e-bike starts at around £1000, and it is easy to remove battery, and easy to remove wheels, a quick release wheel without a motor can cost £75, and without quick release wheels will not fit in car, so limited where the bike can be used, and still have the bike to return on.
If we could have a lighter mode of transportation we would not need electric, we can easy make a car carrying 4 people do over 100 MPG, if we can make it lighter, the Auto Rickshaw View attachment 273558
can carry the load without emitting much CO2, but as to if it can safely is another question. It would be easy enough to fit two e-bike wheels at around 350 watt each and use these to transport tools of the trade, but to be safe we are looking at 20 MPH speed limits.