I saw this bike made by an independent bike shop for himself.
It’s an electric longtail and can carry a 300kg europallet, plus the toolbox on the front, plus an extra person or material on the bike rack!
Here is the link to the shop website: https://www.cycles-penet.fr/
At what point does it become prudent to actually add brakes to the trailer like a truck would have? 300kgs (plus trailer, rider, etc) is a lot of weight for two bike wheels to stop.
I wonder what that would look like from a bike builders perspective.