I'm very tempted by this bike :

https://www.r-m.de/en-gb/e-cargo/loa.../#18L03_020507
I will be using on a round trip of about 2x19 miles, + 1276 ft -2618 ft to go to the supermarket (unloaded) and +2684 ft, -1342 ft to go back home with the bike loaded with groceries/wood (or the wife if she wants to go to the nearest train station ...)
Motor is a Bosch 350W and a dual 500X2w batteries, Since it's in europe we have regulations about the max power of the motor and it's only assisted pedaling.

I already posted this on living car free, but maybe people here will have other ideas about the feasability of my quite excentric project.
It's in a very remote and quite mountainous place of France and I think I will pass for a total weirdo for locals who are riding old and big 4x4 toyotas for hunting boars ...
thanks for your advices.

Yves