I think the argument is that EVs will require vastly less maintenance, which makes sense on paper. I'm not sure how well that will bear out in the near to mid

I think the argument is that EVs will require vastly less maintenance, which makes sense on paper. I'm not sure how well that will bear out in the near to mid term, though, as these are new designs which haven't been put through the paces yet. It's a pretty big transportation sector we're talking about (half a million of these buses in the US), so it will not be a fast transition and early adopters will be paying higher costs than later ones to iron out the kinks. Most districts are probably waiting for someone else to try it out first.