I think I might be the only one who's not in the spirit of the thread, so its probaby me and not you on that one, but it was an interesting PoC and I was amazed at the distance and the compactness of the train.Absolutely agree. My comment was frivolous.
The train PoC is an odd application, given trains travel to pre-defined, limited locations via set routes. The electrification of lines via track or o/h cables seems trivial when you’re building out the rail infra anyway.
Would love to see hydrogen gain traction (no pun intended) in commercial air travel. At 3x the energy density of JetA it would seem to lend itself to a punchy gas-jet burn for takeoff then a gas- electric turboprop for cruise.