Fuel Efficient Vehicles: Hybrid, Electric

From the days of our schooling we have been listening that there are two types of sources of energy, Renewable and non-renewable and unfortunately the energy sources we need are the non renewable ones..So keeping this in mind the automobile makers are coming up with newer technologies to improve the efficiency as well as to decrease the harmful burnt gases and as a result we got
Fuel Efficient (Hybrid, Electric) Vehicles...