Japan wants the Tokyo Olympic games 2020 to run on hydrogen. Furthermore, Japan is aiming to put on the road 40,000 hydrogen fuel cell vehicles by 2020. Toyota and Honda, that already have hydrogen fuel cell vehicles on the road, think that the technology’s superior energy density will triumph over batteries.
More on the link: https://www.ft.com/content/98080634-a1d6-11e7-8d56-98a09be71849