How hip to hybrid cars are you?
Hybrid cars are more plentiful, advanced and efficient than ever, with dozens of options now available to consumers. These fuel-saving, emissions-cutting vehicles currently make up 3% of the total car and light truck market in the United States, helping to meet the government's tougher fuel-economy standards. But how much do you know about how hybrid cars work, and the benefits they can have for the environment? Take this quiz to find out.