A Plug-in Hybrid EV is powered by a combination of a liquid fuel and electricity.
They can be charged with electricity using a plug but also contain
an internal combustion engine that uses liquid fuel. The battery-only range is often very limited (30-60km). The vehicle switches between either engine automatically.
For example, at a traffic light the vehicle takes off using the electric motor,
and when a certain speed is reached, the internal combustion engine takes over. Many car manufacturers now offer PHEV models.