cross-posted from: https://slrpnk.net/post/26007191
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/
Most bike trailers that are designed to handle that load, usually have a built-in brake system as not to rely on the bike’s brakes. This is often called an “overrun” brake or a “surge brake”, and their design is genius.
And many trailers designed to move hundreds of KG will also have an e-assist motor.