Southwest Research Institute (SwRI) has made significant advancements in the evaluation of fuel cell technology for hydrogen-powered vehicles by developing innovative testing methods. Their novel controller system grants engineers full authority over fuel cell engines, allowing for in-depth testing without the need for physical vehicle operation. By focusing on performance and efficiency improvements, SwRI aims to enhance fuel cell humidity management and develop control models suitable for heavy-duty applications. Through rigorous testing of fuel cell stacks under various conditions, the project seeks to ensure commercial viability and reliability of hydrogen technology in the automotive sector. SwRI's internal funding demonstrates their commitment to advancing science and technology, positioning the institute as a leader in the field. Collaborations with commercial clients for testing multi-stack setups signify a promising future for the widespread adoption of hydrogen-powered vehicles.