Hydrogen can also be used in internal combustion engines with most of the benefits of reduced emissions (NOx not withstanding) with minimal modification. If the

Hydrogen can also be used in internal combustion engines with most of the benefits of reduced emissions (NOx not withstanding) with minimal modification. If there was a source, distribution and storage infrastructure for hydrogen we could start using it tomorrow. Personally I don't see much hope in that direction. Hydrogen combines high pressures with corrosive nature (see hydrogen embrittlement) and high flammability. Unless someone comes up with a really good storage matrix for it.