ZE Energy Sources for Locomotives

[NNadir]

1. It is somewhat ironic that a diesel engine could be...

...if properly fueled ane of the cleanest power devices in the world, if and only if fueled by DME, although nitrogen oxides would still need to be addressed catalytically.

I note that most fuel cells are heavily involved with problematic fluorine/carbon chemistry and only work in any case with unsustainable and dirty hydrogen.