He is the project director for the 'Hydroflex' train which was showcased at an event in the West Midlands.
Unlike diesel trains, hydrogen-powered trains do not emit harmful gases, instead using hydrogen and oxygen to produce electricity, water and heat.
It is "a fully green fuel", says Helen Simpson from rail rolling stock company Porterbrook, which created the Hydroflex in partnership with Birmingham University's centre for Railway Research.
Read more here: https://www.bbc.com/news/business-48698532
