I do wonder if EMUs will one day come into their own - especially going down the battery route.
I understand the current argument that visitors to heritage railways want steam, the preserved railways want trains they can run under their own power.
Twenty to thirty years from now, the green restrictions might be way stricter and coal might be much harder to come by - this is not speculation, it's already happening. It could be the case that the NRM and other heritage lines end up with a lot of static steam engines (and maybe even diesels) that they cannot afford to run, or maybe are not permitted to run.
Will EMUs become a viable alternative?