One morning Tom put on a suit and tie, and set out on a business trip. To reach his destination, he had to drive across the desert. Three hours into the journey, his car died. After looking under the hood, but not seeing what was wrong, Tom sat down to wait for help. After hours went by with no help arriving, he decided to walk to the next town. He took off his coat and tie, put them in the car, and set out. An hour later, he began to regret that decision. The sun was now directly overhead. With each passing minute, it was growing hotter, and he was getting thirstier. An hour after that his mouth had become as dry as cotton.