The article discusses using hydrogen as a fuel for vehicles, focusing on making the fuelling process safe and convenient for users. They examined past research on hydrogen's potential as a major fuel source for the future. Hydrogen can replace fossil fuels in both internal combustion engines and fuel cells, but special engine designs are needed to avoid issues like abnormal combustion. Hydrogen-powered engines can improve efficiency, power output, and reduce harmful emissions. Fuel cell vehicles have low emissions but require extra space and weight for batteries and storage tanks, increasing production costs. To generate hydrogen in an environmentally friendly way, carbon-free renewable energy sources must be used. People's awareness of hydrogen's benefits for the environment and human health still needs improvement.