That piques my interest. I was under the impression that in 2010, world fairs were kind of obsolete events, series of advertisement for products that are not especially innovative.
Were there any interesting visions of the future at this fair?
Exhibitions were primarily organised by countries, which tend to be more particular about some specific culture than visionary about the future.
The theme was "Better city, better life" (subtly different than the Chinese version, which was "Cities make life better"). Technologies demonstrated are far from cutting edge, something like internet-connected air conditioners and large touch-screens.
I think either the Danes or the Dutch put some bikes in their exhibition, which you can ride and feel what it's like to ride in their cities, which is rather fun (a precursor to the current VR hype perhaps?).