A friend of mine was stranded alongside a Texas highway about five miles from the nearest town. He thought he had enough gas to make it to the next gas station, but alas, he didn't. He thought about how long it would take him to walk those five miles to the next town on this very, very hot and humid day in Texas. He knew that the longer he sat there, the longer it would take. So, he began walking and after about fifteen minutes, an old, beaten-down Ford truck slowed down. He thought, "Wow, wonderful, maybe I'll get a ride into town." What he received instead was a miracle.
The truck driver pulled up alongside of him and offered him a lift back to his car. This same driver had in his possession an old, worn out gas can that was full of fuel. The truck driver explained to my friend that the day before, he too, ran out of gas thinking he could make it to the next town when this woman got out of her vehicle, offered him a lift to his truck and filled up his truck with gas from this very gas can. She told him that this gas can has been traveling the highways and byways for years....no one knows how long really. All that he would need to do is find another person who ran out of gas, tell him this story, and pass the gas can along.
So sure enough, my friend got his car filled, was handed the empty gas can and was instructed to fill the can and pass it on.