What is a short summary of the story, Man from the South?

Carlos is the strange, sadistic old man of uncertain South American origin who enjoys making bets that permit him to chop off a finger of his opponent if he is victorious. Carlos offers to bet a shiny, sleek new Cadillac that a vacationing soldier in Jamaica can't get his cigarette lighter to fire ten times in quick succession. Just as the venal old man is about to chop off the soldier's pinkie, his wife enters their hotel room and screams at him to stop. She tells the soldier that her husband has made a lifetime habit of making such bets; the Cadillac belongs to her and is not even his to give away.