> All this clean electric car revolution with energy recovery, low number of moving parts and so on, that's happening now, for trams happened 50 or more years ago.

True. But the thing is that: it sucked

You know that "lever up, tram goes, lever down it stops"? It was something like this: https://en.wikipedia.org/wiki/Potentiometer#Rheostat

Sure, mass transit is good, electrical/hybrid ones even better, but as much as I hate mechanical ICEs, the electrical ones weren't much better.

And mass transit can profit a lot from hybrid technologies