Well besides that electric scooters are illegal around here on streets, I saw some yesterday while going biking on a trail home, felt really sad for the owners, since their batteries had run out and so they were being devoured by swarms of mosquitoes.
Fortunately for me, I was riding the bike far too fast for the suckers to hold on, though had to make use of my hat to prevent too many getting in my eyes.
Also that kinda range for escooters and ebikes 15-20miles or up to 30km, is quite negligible, I often exceed that when going to a store and back.
If I want to go berry picking on a farm it's 40km one way.
For a diesel assist need a licence, and regulations may be different in different areas, but manual bikes are pretty much okay everywhere.
Since I'm interested in really long-distances comfortably on the bike, I'm thinking of a recumbent bicycle, possibly a python since it has very few parts, i.e. handle-bars optional
here is a video of a foldabing python, should be pretty easy to lower into a dinghy also by the seat back. note how he has his hands in his pockets while riding
there is also a mod with rear wheel steering for extra control
only thing would be figuring out how to mount a rack on it.