Hydrogen fuel cell vehicles (FCVs) use hydrogen gas to power an electric motor. They convert hydrogen into electricity through a chemical reaction in a fuel cell, producing only water vapor and heat as byproducts. This makes them an environmentally friendly alternative to traditional gasoline-powered cars. FCVs are refueled at specialized hydrogen stations, which supply compressed hydrogen gas. The driving range of these vehicles is comparable to that of conventional cars, and they can be refueled in just a few minutes. As technology advances, hydrogen fuel cell vehicles are becoming a more viable option for sustainable transportation.