I am going to visit the world exposition that year. It will be held in a temporary structure made of glass or preferably diamond in Hyde Park that has been assembled by NANOBOTS and one of the primary industrial marvels will include said nanobots.
Dear future, please do not disappoint me again. I'm still bitter about the hovercars.
Edited: I did some digging this morning and apparently bidding for Expo 2020 will be from 2011-2014. So if this pattern follows, we need to be preparing the Great Exhibition 2 bid for Expo 2051 in the early 2040s. Remind me again in 30 years, please?