Very interesting!
I'm also looking into a trailer of the same type.
I see you have attached 2 batteries on each side of the fork. Ingenious.
I'm going to have a Tongsheng TSDZ2 motor installed on my Surly Disctrucker soon. I have no fun on the mountain roads with my 100 pounds of gear on the 2 racks of my bike. With this engine addition, I want to start traveling again to places I don't dare go anymore!
The idea of a fat-bike rather than a mountain bike with front and rear suspension is interesting, as it's such a simpler bike. Isn't it a bit dragging on paved roads?
How do you transport your bike? Can you put it on the plane or train in the US? And you must have a very strong car bike rack!