Hybrid vehicles combine a gasoline engine with electric batteries and motors to reduce emissions and improve fuel efficiency. They can run solely on the electric motor for short distances using regenerative braking to recharge the batteries. Some key hybrid technologies include start/stop functions, electric drives, regenerative braking, and power split devices that allow the gasoline engine and electric motor to work together or independently based on power needs. While hybrids provide benefits like better mileage and lower pollution, their initial costs tend to be higher than conventional vehicles due to the battery technology. Overall, hybrids are seen as an important technology for the future to conserve fuels and resources.