Why don't we bring trolleybuses back? They rock! You don't need polluting batteries in order to run them, just some copper to put the wires up, and we've been master of this "technology" for almost a century now. Also, we should extend or re-introduce the tram network.
In "Ile de France" (Paris and its metropolitan area) the last tram line was closed in 1938 but it's coming back and there are now 14 lines planned, 10 of which are already opened (8 of those opened between 2006 and 2017), the oldest one opened in 1992 and the last one in the current plan should open in 2023.
https://en.wikipedia.org/wiki/Tramways_in_%C3%8Ele-de-France