The article discusses the challenges the world faces in decarbonizing the transportation sector, which accounts for a significant portion of global greenhouse gas emissions. As the need for green, powerful, lightweight, and safe transport fuels grows, various alternatives are being explored. The demand for renewable energy is projected to increase substantially, requiring a rapid acceleration in the adoption of renewables. The International Energy Agency proposes pathways to achieve net-zero emissions by 2050, emphasizing the importance of replacing fossil fuels with sustainable alternatives like green hydrogen and biofuels. Electric vehicles are gaining momentum in the light duty traffic sector, with several nations mandating the transition to all-electric cars by 2035. Despite the historical promise of hydrogen fuel cells in decarbonizing cars, challenges such as infrastructure development and sustainable hydrogen production have hindered widespread adoption.