Explained: What is a hydrogen internal combustion engine, and can it be a real alternative to battery EVs?

Toyota is pushing the pace on the development of hydrogen internal combustion engines for mass production, but how does it work and is it a feasible concept?

Explained: What is a hydrogen internal combustion engine, and can it be a real alternative to battery EVs?
Toyota is pushing the pace on the development of hydrogen internal combustion engines for mass production, but how does it work and is it a feasible concept?