>>1212570The new government *MIGHT* improve things, the now ruling party has on at least one occasion spoken out against the (meme) proposal of replacing the trolleybuses with battery buses (
http://www.eluniversal.com.mx/articulo/metropoli/cdmx/2016/11/23/morena-rechaza-sustitucion-de-trolebus-por-autobus-de-baterias).
The new Mexico City mayor Claudia (((Sheinbaum))) in her program included proposals of improving the trolleybus system, extending it by 5 km and reactivating 13 km of it. There's no point in ever trusting political programs in Mexico, but at least hers was somewhat more realistic than others which at times promised crazy things like "100 more km of metro lines".
Though there's only 8 lines those rack up 203 km (I think that includes overlapping lines, of which however there's not much). According to the STE union there's 450 km of wire in the city (not counting each way). Some of that will never be used again because it's redundant with metro, but other parts could be reactivated if the investment were to be made available. Time will tell.
Pic related is one of the oldest units still in operation, from 1975, a testament to the durability of the trolleybus.