Military vehicles are purpose built. They didn’t use hydrogen because it was green, they used it to fulfill their requirements for a silent stealth battle tank. But I’m sure your technical knowledge far outdoes that of the people involved in designing this tank 👍 Very credible 👍🏿
Fuel cell technology will also dramatically reduce the noise the tank generates when on the move.
Literally from the article you failed to open.
You can link from almost any other instance. This is a skill issue.