CNG vehicles are automobiles that run on compressed natural gas instead of traditional fuels like gasoline or diesel. CNG is a cleaner-burning fuel, which means it produces fewer harmful emissions, making it better for the environment. These vehicles are often used in public transportation and fleet services due to their cost-effectiveness and lower environmental impact. CNG vehicles are equipped with special tanks to store the gas at high pressure. They can be refueled at dedicated CNG stations, which are becoming more common in many areas. Overall, CNG vehicles offer a sustainable alternative for reducing air pollution and dependence on fossil fuels.