The H2Rescue truck, developed by Cummins Accelera in collaboration with the U.S. Department of Energy and Department of Defense, has set a new Guinness World Record by traveling 1,806 miles on a single tank of hydrogen fuel. The journey took place in California, where the truck carried 386 pounds of hydrogen and emitted only water vapor throughout the trip. Monitored by a Guinness World Records adjudicator, the truck's performance showcased the efficiency of hydrogen fuel cell technology by consuming 370 pounds of hydrogen. The H2Rescue truck, weighing 33,000 pounds, is built for real-world emergency response scenarios, providing 25 kilowatts of power from its fuel cells for up to 72 hours without refueling. Additionally, it produces water as a byproduct, offering a small but potentially beneficial water source in emergency situations. By using hydrogen instead of gasoline, the truck saved 664 pounds of CO2 emissions and demonstrated the potential of hydrogen-powered vehicles in reducing greenhouse gases. The Department of Energy estimates that replacing traditional emergency response vehicles with H2Rescue trucks could lead to significant fuel and emissions savings, showcasing the potential impact of hydrogen fuel cell technology in heavy-duty transportation and emergency response applications. The success of the H2Rescue truck highlights the future of cleaner and more efficient transportation, proving hydrogen-powered vehicles to be a promising alternative to fossil fuel-powered vehicles in sectors that are challenging to decarbonize.