Greetings friend @tocho2. No doubt our planet demands a better option than fossil fuels, but among the green fuel options this is the least favorite for me, despite its potential it has a couple of important limitations, first that the main way to obtain it consumes non-clean energy and second is highly flammable, so transporting and storing it safely is a challenge. It certainly has the potential to move heavy machinery if its systems are adapted, I read that Airbus already had prototypes of hydrogen powered aircraft and that a company in France was already making cells designed to move ships.