Also, standardized cardridges could be swapped at fuel stations (which was the original business plan of Better Place, in case anyone can remember). Also, this would allow a service to charge cars parked in areas of high population density with a lack of charging stations. Cardridges could be handled like jerrycans, making range anxiety a thing of the past.

THere are meny potential use cases where green hydrogen would make sense, even if people with calculators will tell you differntly.