Flying cars, new medical technologies for the elderly and hydrogen- and ammonia-powered vehicles and buildings: These are just some of the things visitors are expected to experience, both in person and remotely, at the Osaka, Kansai Japan 2025 Expo, which will take primarily but not exclusively in Osaka.

But with the 2020 Dubai Expo still underway after being postponed by a year due to the coronavirus, less than half of the 150 countries Japan hopes will be at the 2025 Expo have formally promised to come.

Countries have been slower to make formal commitments largely because they won’t decide whether they will attend the Osaka event until after the Dubai Expo finishes, but also because they’re not ready to spend money on a 2025 Expo amid the domestic and international economic damage caused by COVID-19.