seika0 said:
You don’t see aerial trams or trains running on streets (outside of designated crossing areas, if you want to be persnickety about it).
I'm going to just leave this here (yes I know this line is no longer in active use, although it is still there and still usable - there are places in India where heavy rail trains regularly run along roads even today as well as a case here in the UK a few years ago where a temporary road was built along an actively used railway track as a diversionary route)
Or perhaps this one from the US ? (about 7 mins in)
But anyway, it seems apparent that both streetcar and tram are ambiguous to a certain extent and, whilst tram is the one I'd have gone with if I were designing the site (as I've never heard of a cable car cabin referred to as a tram), it appears that one term is not significantly better than the other so there's little case for changing which is the main tag.
Updated