Most common tram models on this video are Hägglunds M29, ASEA M28 and ASEA M31. You can also see AnsaldoBreda Sirio/M32, but not Bombardier M33 because it was quite rare and I didn't want to use extra time for it because I can film them later.
All M28s have been withdrawn less than two months after filming because they had major corrosion damages. For this reason line 14 doesn't operate anymore and some of M29 operate without another car. If I could have known the withdrawn I would have filmed longer video, but it was impossible to know because operator didn't know how bad damages were until the end of October.
Tram / light rail system in Gothenburg is one of the best in the world. In Gothenburg they have invested infrastructure more than fleet like it should always be. The first light rail was build in 1950s. Traffic is fluent because trams normally don't have to give way for cars or pedestrians. There are many tunnels and also one underground stop which you can see at 20:29.
Filmed: 2.9., 3.9. & 4.9.2021