Tokyo’s governor is wrong about this. The last summer games will be the 2012 games, because the world is ending in December of 2012. It’s pretty much a lock - I saw it on the History Channel. The Mayan calendar, Nostradamus, alignment of the stars and other factors confirm this.
The 2020 Olympics will be in Fairbanks because of global warming. It will host the summer and winter games simutaneously. The 2024 will be hosted jointly by Iceland and Greenland.