After getting off work from the toy factory that night, Duffus was going out to dinner with the girl next door. Wanting to impress her with his newly painted car, which he painted himself using some old paint the factory was going to throw out, he decided to go through the car wash before meeting her. Duffus gazed into the steaming hot car wash thinking how great his car would look after. Then he noticed the time. "I'm gonna be late," thought Duffus. Once through, Duffus sped out of the car wash as the attendant looked on in amazement at his car. Duffus, normally a responsible driver, but now in panic mode, became a speed demon on the only road out of town. He raced past the doughnut shop where two officers were parked, and they happened to get a really good look at Duffus's car as he sped by. As it started to rain, Duffus thought how the cold wet weather could ruin his dinner plans. Realizing the roads were getting slick and he was way in excess of the speed limit, he slowed down. Then, Duffus noticed the flashing lights and sirens. He was the only car on the road for miles, so he knew they wanted him and pulled over, but they just slowed down enough to get a good look at the car and sped off in search of their speeder. "Strange," thought Duffus, and kept going. Though the police had clearly seen Duffus's car as he passed the doughnut shop, they thought Duffus was not the one they saw.

Why?