A petroleum-electric hybrid vehicle, more commonly referred to as a hybrid uses both an internal combustion engine and an electric motor to power the vehicle. The power source is selected automatically by the vehicle, depending on speed, engine load and battery charge level.
Unlike pure electric vehicles, a hybrid vehicle cannot work on pure battery or internal combustion engine alone. Both need to be operational to work. This battery cannot be plugged in; the charge is maintained by ICE generated power.
Although the first petrol- electric hybrid automobile was developed in 1899 by Henri Pieper low emissions and alternative fuel vehicles have become more and more common. The hybrid vehicle provides a great alternative for someone looking for an economical, eco-friendly vehicle without being restricted to charging point locations or limited range.