You just tell them to evacuate, and watch until enough get trampled so that you can evacuate. No, seriously, there is _no_ way to get 36M people out of a city

You just tell them to evacuate, and watch until enough get trampled so that you can evacuate. No, seriously, there is _no_ way to get 36M people out of a city in an orderly fashion, people, even Japanese people, cannot do such a thing without causing much more damage than anything you want to evacuate from. And this is before the whole 'where-to' issue.