it's honestly kinda strange that cargo trams aren't used more, i obsess over gothenburg's tram network and the suburban lines definitely seem like they should make sense to run some cargo on.

Especially this line should be perfect for cargo trams, you can set up a siding just north of Gamlestaden station and transfer goods to a tram there, then take the conveniently already existing traingle track to turn onto the line to bergsjön, and then you can just use the existing stops to unload stuff early in the morning and take it to the shops with those electric mini-forklifts since a lot of shops are right next to the stations (sensibly!).