This limitation does not mean that Honda thinks that only the Japanese government should get an H2 vehicle. In fact, Honda is promoting the FCX Clarity with an introduction event aimed at children. I'm sure all hydrogen fuel cells skeptics will have a field day with this bit from Honda PR:
The event ... provid[ed] children an opportunity to learn more about environmental issues, dream their own dreams of advanced technology, and experience the wonder of the FCX Clarity by seeing and touching the actual vehicle. This experience also encouraged children to take a step ahead of adults and envision a more environmentally responsible future, one in which the first automobile they drive will be a fuel cell vehicle.