Afternoon didn't have a chance to deepen into evening; clouds gathered over the discolored sun and rain began to fall. Then hail. Then snow.
Shortly after that, they ran out of gas.
Some lines from the fanfic
Redux by Alli Snow that have haunted me for years. (Finally found it again! Which was hard because all I remembered was that it was a Batman/Wonder Woman story that was not on FFN. My memory is weird like that.)