Don't Tell Me.... SHOW ME.
Show me is what is done in the book.  In the area of the book regarding Hydrogen storage it is one thing to talk about future super tanks made of carbon fiber and current tanks of fiber glass and aluminum and then there old fashioned are steel tanks.  The remarkable statement is that steel tanks hold hydrogen just fine.  We make steel tanks by the millions today.  These are at world record low prices.  You can go get one today in almost any city in the USA.  These are DOT rated and safer than a gas tank full of gasoline.  Ok..that's great.  Nice statement.  This is where other people would stop in their books.  Roy's book SHOWS YOU.  Roy has a tank here that is dated 1917.  This tank has held hydrogen its entire life.  It was probably used for fueling blimps back during and after World War ONE !   Yes, I said World War One.  Roy is a certified professional engineer (P.E.) and a metallurgist.  He is qualified to inspect, test and certify pressure vessels legally.  He has sampled, tested and verified the metallurgy and the safety of this hydrogen tank.  It passes with flying colors and he still uses this same tank today.  So much for the myth and the lies of steel not being able to safely hold diatomic hydrogen molecules.