If you know, could you expand on the capital costs to convert a typical petrol station to, or augment it with, hydrogen capacity? I strongly suspect there's rat

If you know, could you expand on the capital costs to convert a typical petrol station to, or augment it with, hydrogen capacity? I strongly suspect there's rather a lot of hardware (insulated tank and plumbing, major refrigeration, etc) required, and I suspect there are in some states at least rather restrictive (post-hindenburg) laws about hydrogen storage. Much higher costs than a Tesla superstation, no? I own an RV with a propane tank, and propane storage and filling equipment is more complicated than the petrol equivalent, and a propane fill is always done by a trained person -- no self-serve allowed! Hydrogen would be many times more complex. Also re standardization, there is a standard electrical plug use at all EV charge points, it fits my Toyota plug-in hybrid, a Nissan Leaf, or a Tesla. I am looking forward to stopping at a Tesla superstation with my Prius, I can probably get a full charge in 5-6 minutes...