All have a box under the seat and then boxes are usually bigger than what most bycicles have available.

I wonder which surfaces are we talking about when taking into consideration proper driving regulations.

I think GP was talking about "kick scooters", the ones on which you stand, whereas you're talking about "motorcycle scooters", the ones on which you sit.

I agree, the latter kind usually have much space, and can maybe even be modified to add a top case, etc.

The first ones, though, are an atrocity as far as I'm concerned. Very unstable, the small wheels need perfect pavement (I live in Paris, our streets haven't seen any maintenance since Roman times).

I don't think there is really much difference between an electric sit-down scooter and an e-bike except for ergonomics, except where you might get some weird looks - riding an ebike on a 35+mph road, vs riding a scooter on a dirt trail.

But still, google "radwagon 4" as an example of an e-cargo bike(this is what I have). It has way more capacity than a sit-down scooter. I put two (small) kids on it, and about 50 lbs of groceries, which I don't think one could do with a sit-down scooter.

https://www.piaggio.com/en_EN/piaggio-world/news-piaggio/pia...

From my point of view cargo bikes are the two wheel version of trucks/bus, and only suitable for transport inside of city traffic, whereas with the other ones they are as usable as any motorbike.