Chetan’s father wanted to buy a car. He visited many showrooms to find out the price and the specifications of various cars. In ne of the showrooms he was told by the salesman that their car had excellent brakes that the car stops instantaneously. Chetan’s father was pretty impressed and decided to buy that car. In the evening, he discussed this with his family. Chetan told his father that such a car cannot be made and the salesman has lied to him. He told his father that he should not buy that car and moreover never from that showroom. He explained to his father why it is not possible. His father was convinced and promised to visit another showroom and be careful this time.