I drove 1800 miles in a Hydrogen Car

Anyone who is a student of the Apollo program is aware of hydrogen fuel cells (so this is old technology - in concept) and the fault of which is suspected to have resulted in the Apollo 13 mishap.  The one thing I heard that makes sense, is her comment, "We can't get there by batteries alone."  I'd really like to dig at that.  Hydrogen, for the reason she cited at the beginning of the video that hydrogen is highly reactive and is not found on Earth as H2, means, that unlike fossil fuel, that is really stored solar energy over millions of years, conveniently compressed by geologic processes over that same period, hydrogen must be "mined" - in the same way that copious amounts of electricity is required to melt, then electrolyze bauxite, to produce all the aluminum that we use in modern industrial society, so too must some starter material, such as water, have a great deal of energy input in order to separate the hydrogen.  A childhood demonstration is to take a glass drink container with a narrow neck, and put a few strips of aluminum foil in the bottom, add a couple of tablespoons of lye (sodium hydroxide), then take a ballon, fill it "lightly" (no need to expand the ballon), fasten the mouth of the balloon around the mouth of the drink container, and upend the balloon, dumping the water into the bottle.  The resulting reaction is highly exothermic, and will inflate the balloon.  This is pure hydrogen (plus some water vapor) and will float the balloon nicely for a short time.  As pointed out by the Toyota lady, and Diana's dad, the molecules are so small, the balloon (a typical latex one) will quickly deflate.  And we all know there are NO perpetual motion machines, so the energy required to produce the hydrogen, to compress the hydrogen, to transport the hydrogen, to dispense the hydrogen, then factor in the inefficiency in the electric power chain, and the motive energy to move the car and occupants will be far less than the input.  Of course, if the hydrogen production can benefit from otherwise waste energy, and renewables, and fusion when that gets here - that'll be another story.  I would dearly love to see the business forecast Toyota is using to justify investing in hydrogen.  And BMW spent a boatload of R&D on hydrogen. I think most of that is on the shelf.  ONLY if we truly "can't get there by batteries alone" would the huge investment in a hydrogen infrastructure on which any vehicle manufacturer would depend, make sense.