Havana Shrugged

 From the last part of Atlas Shrugged:

There were not many lights on the earth below. The countryside was an empty black sheet, with a few occasional flickers in the windows of some government structures. and the trembling glow of candles in the windows of thriftless homes. Most of the rural population had long since been reduced to the life of those ages when artificial light was an exorbitant luxury, and a sunset put an end to human activity. The towns were like scattered puddles, left behind by a receding tide, still holding some precious drops of electricity, but drying out in a desert of rations, quotas, controls and power-conservation rules. 

But when the place that had once been the source of the tide — New York City — rose in the distance before them, it was still extending its tights to the sky, still defying the primordial darkness, almost as if, in an ultimate effort, in a final appeal for help, it were now stretching its arms to the plane that was crossing its sky. Involuntarily, they sat up, as if at respectful attention at the death bed of what had been greatness. 

Looking down, they could see the last convulsions: the lights of the cars were darting through the streets, like animals trapped in a maze, frantically seeking an exit, the bridges were jammed with cars, the approaches to the bridges were veins of massed headlights, glittering bottlenecks stopping all motion, and the desperate screaming of sirens reached faintly to the height of the plane. The news of the continent’s severed artery had now engulfed the city, men were deserting their posts, trying, in panic, to abandon New York, seeking escape where all roads were cut off and escape was no longer possible. 

The plane was above the peaks of the skyscrapers when suddenly, with the abruptness of a shudder, as if the ground had parted to engulf it, the city disappeared from the face of the earth. It took them a moment to realize that the panic had reached the power stations — and that the lights of New York had gone out.