The US is witnessing a swift transition towards more sustainable and environmentally friendly fuels, fueled by the need to combat the escalating greenhouse gas emissions. With the transportation sector being a significant contributor to these emissions, various alternative energy sources are emerging as key players in revolutionizing mobility. The trio of hydrogen, electric batteries, and liquids are at the forefront of this transformation, each presenting unique challenges and opportunities. While renewable diesel and biofuels are preferred for their compatibility with existing diesel engines, making them appealing for fleets aiming to reduce their carbon footprint without major infrastructure overhauls, electric vehicles are currently dominating the zero-emission market for passenger vehicles. However, hydrogen is increasingly gaining attention, especially in the realms of rail and road transport. Its appeal lies in the potential to significantly cut down greenhouse gas emissions and provide a high-energy-density, sustainable fuel option. Despite the promising outlook of hydrogen, access to further insights in the article requires a subscription.