In reply to <a href="https://electrek.co/2016/04/26/automakers-fuel-cell-hydrogen-electric-vehicles/#comment-26595">Simon</a>. Hydrogen is the answer. Making hydrogen from oil/gas is stupid. Solar energy changed into hydrogen is the smartest renewable energy known to man. A catalyzing material (usually platinum) is needed to perform electrolysis. The hydrogen is captured in regular run-of-the-mill, usually steel, propane cylinder tanks and are the most common type of LP gas containers in the world. They number in the billions. Hydrogen has no shelf life. It has no expiration date. It can be used to cook with. It can be changed into fuel cells. I suggest that you do some serious research into the proven capability of hydrogen as the most sustainable renewable CLEAN energy. Zero carbon emissions. NASA has been using hydrogen for many years. Mike Strizki is a friend of mine and holds many patents for this technology.