Yes, but the large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), then package the gas by compression or liquefaction then transfer the energy carrier to the user leaves around 25% for practical use. This isn't exactly an acceptable value to run an economy in a sustainable future. Sure, they could research into easier methods of acquiring Hydrogen but the reasons I'm giving to you now are why we aren't doing it. Countries don't want to fully depend their automobiles on a source of energy which is wasteful to obtain and would rather wait until these 'easier methods' have been discovered. Refer to my first post.
America already made their decision. Refer to the quote in my first post.
Just to say something. I'm not saying that it's a bad idea (I'm all for looking for new ways to power our vehicles), it's just that at the current moment it is not the greatest source of energy to depend upon. Plus seeing as some countries have even cut off funds for the development of hydrogen vehicles, that makes some of the vehicle companies put off the idea of making hydrogen vehicles.