This is a very interesting topic.
This article says that most of the world's hydrogen is made from methane, which results in carbon dioxide being released to the atmosphere, as opposed to electrolysis which is entirely clean. I personally think countries should be investing in nuclear energy and bringing the costs of electricity down to make hydrogen more attractive.
Doesn't make any sense. If this is true, then hydrogen run vehicles emit more carbon (indirectly) when compared to diesel run vehicles. And don't think that electrolysis can be a completely eco-friendly option. What if the electricity needed for this process comes from thermal power plants? I have said this for quite some time. At this point, nuclear energy seems to be the most ecofriendly option. Hydrogen is a good alternative, but the technology is not that advanced to implement it everywhere. Hyundai claims that the trucks will be having a range of 400km. That is under optimal conditions. After a few years, the range will get reduced to 200-300km, and that will result in some inconvenience for the drivers.