Hydrogen, as an alternative fuel, continues to hold promise for the automotive industry despite facing challenges in adoption due to factors such as infrastructure, safety concerns, and costs. Two primary methods of harnessing hydrogen for power are through hydrogen fuel cells and hydrogen-powered internal combustion engines. Hydrogen fuel cells, like those in the Toyota Mirai, operate by converting hydrogen into electricity through a fuel cell process involving a proton, electron separation, and water production. On the other hand, hydrogen-powered internal combustion engines function similarly to traditional engines, offering a familiar driving experience powered by hydrogen. Companies like Toyota and Cummins are investing in hydrogen engine technology for a range of vehicles, from heavy-duty trucks to race cars. The potential benefits of hydrogen-powered engines include a reduction in gasoline dependence and the retention of the signature engine sound. Despite challenges like infrastructure limitations and engine modifications, hydrogen-powered technology offers a promising pathway towards more sustainable transportation options.