Long-haul trucks are essential for transporting goods globally, but their reliance on diesel fuel poses a significant environmental challenge due to carbon emissions. William H. Green and his team at MIT are researching alternative, low-cost fuels to reduce carbon emissions from long-haul trucks. Despite past studies showing limited success with battery electric options, the MIT team has turned to hydrogen as a promising alternative. By leveraging materials that can efficiently store and release hydrogen, they aim to revolutionize the industry. MIT researchers created a realistic 'drive cycle' for long-haul truck operations in the United States, focusing on factors like daily range, vehicle speed, and road grade. By comparing various replacement fuels and powertrains against conventional diesel benchmarks, they intend to find a cost-effective and environmentally friendly solution. While battery electric options showed little promise, the team is optimistic about the potential of hydrogen for long-haul trucking. This innovative approach, yet to be widely recognized, could reshape the future of freight transport and contribute to a cleaner environment.