I would actually love to see Trolley busses in my city (Melbourne). You could have models with battery storage, so they charge up using the overhead tram lines we already have, and then can extend past the ends of them.
They have those in Vancouver, Canada as well, when I saw that for the first time (early 2000s) my reaction was "why are we too stupid to use those in Montreal?"
I believe they have these in Brisbane, Australia. This image is also from Australia somewhere given the street signs and what looks like the Australian Aboriginal flag (and possibly the normal Australian flag) in the background.