One's Concrete Jungle Is Another's Graveyard

The concrete jungle was never so much a jungle as it was a tomb, holding all of the dead bodies which lay in it. Mary Sue walked amongst empty cars on empty streets, looking for one with a functional battery. She needed it. Perhaps it would be useful now that the power grid was off. She and the others had been looking for batteries so that they could use some of the appliances in the house. It kept some of their food cold for a few hours. They had found a few generators, but the batteries proved to be more mobile.