The so-called 'elites' seem to feel a small percentage of the population can survive long-term in self-sustaining underground bases, and they may be right, who knows. But on the current course, the above ground biosphere won't support most of the human population beyond 2030.

IMO, Agendas 21/30 are actually intended to drastically cut back on fossil fuel emissions by eliminating private autos and reducing electricity usage. The idea is to slow down global warming and thereby save some of the human race from extinction. If these plans are implemented, the population will be forced into self-sustaining zones, which won't be pretty as many will die, but it beats human extinction.