I think your ancient ideas have fallen a long way off the...

I think your ancient ideas have fallen a long way off the pace:
https://www.timeout.com/sydney/news/good-news-nsws-new-hydrogen-and-electric-buses-will-dramatically-cut-emissions-020224

https://news.cgtn.com/news/2024-05-01/Beijing-Auto-Show-Hydrogen-cars-may-be-green-transportation-solution-1tfqaWVISA0/p.html

I've been thinking about sequestration and although it is technically feasible, it is also quite costly. I think a new process developed in WA called the Hazer* Process, currently being trialled at larger scale, that renders the carbon out of the methane CH4 molecule as solid graphite will become the new and preferred way of producing green hydrogen in the quantities needed for transportation in the coming years.
*Yes, I spelt that correctly. Hazer, not Haber.