One day, a man was watching TV in the living room of his house. He saw a program about global warming and thought, "We need to protect our environment.A few days later, while surfing the Internet, he read an article about electric cars. He thought electric cars were very environmentally friendly and wanted to buy one.A week later he went to a showroom to look at electric cars. The salesman showed him both an electric car and a hybrid and told him that the electric car was more expensive than the hybrid. The man wanted to buy an electric car but could not make the decision because of the higher price