One day it will all end and the highways will stop vibrating and the cars will have been parked. 

The deer will wander down from the mountains along with the other restless creatures and they will live among the newly abandoned suburban streets. 

This apocalypse isn’t religious and there are no zombies, I think all the people just got so sad they decided to retire to the next life and left behind a world of awkward reminders of their time here.