I've never understood the infrastructure argument for Hydrogen vs Battery. Electricity is ubiquitous in many places in the world and can be made in situ. One can argue that there will need to be a lot of infrastructure upgrades for the power demand, but that is needed for the slightly less efficient hydrogen electrolysis as well. I see developing countries continue to do what they have already been doing; using smaller, more efficient vehicles including bikes (both motorized and non), and shared transport methods.