A hybrid is just a vehicle of low fuel consumption with dual motors, an electric motor and a gasoline-powered alternative. It also has a system specially designed that captures the braking energy and transfers it to the battery to keep it charged at all times.
Actually, having two engines has pros and cons. On the one hand, the electric motors do not take any energy when they are stopped, in fact, simply turn it off and therefore it will use less gas when speed is low. Gasoline engines are more effective at high speeds and therefore provide a more powerful drive, but during the stop or while going on a trip or low-speed, the electric motor will be sufficient without costing you money and smog to the environment. When you reach higher speeds, usually 40 miles per gallon, the gas engine will start to come into play and will allow car owners to travel quickly on the highway.
The hybrid technology in cars is becoming increasingly accessible to all. The prices of hybrid and electric cars have been greatly reduced and there are very good models like one of the next 10 vehicles that can be purchased as cheap as under $30,000:
Some good reasons to buy a hybrid vehicle:
Some good readings about the best and cheapest hybrid cars:
Video - The Honda Insight remains as the cheapest hybrid car in the USA automarket.