The police car races in front of you, sirens wailing and lights a blinking. You begin to laugh your evil laugh. After you are done, you smile. You are very proud of yourself. You had been working on that laugh for a long time. You reward yourself by running over the police car. That makes you feel really good. The best you have felt ... ever.
There is a parking lot full of cars just a block in front of you. And, you notice a big red button on the bulldozer's control panel. Should you destroy the cars or push the red button? Then, you realize you are hungry. You have not eaten this morning.