This malaise has many causes, not the least of which is a lack of an Elon Musk Christ-like advocate leading the charge. But the real reason that fuel-cell vehicles — be they passenger or commercial — ...

Piasecki’s Haxel hydrogen-electric demonstrator has fuel cells either side of the tail and tanks under the ... and some believe cryo-compressed hydrogen storage holds the key to widespread ...

Thus materials must be selected carefully to store hydrogen safely. It’s commonly stored as a compressed gas ... a “high-pressure hydrogen tank,” suggesting storage in gaseous form.