The Engine Technology Forum highlighted the potential of hydrogen engines as a solution to meet clean air standards globally. Dr. Ameya Joshi's whitepaper emphasized the benefits of hydrogen engines over traditional options, citing lower emissions, simplified after-treatment, and faster refueling. Cummins and other companies are investing in hydrogen technologies for long-haul vehicles, with Jim Nebergall pointing out the need for a multi-energy source strategy. Despite challenges in hydrogen production emissions, experts like Louise Arnold from Johnson Matthey see hydrogen as a critical player in the low-carbon future. The development of 'green' hydrogen using renewable energy sources is essential for reducing overall emissions. Dimitri Konson from Tenneco views hydrogen as a pragmatic near-future step towards reducing CO2 emissions. However, the availability of hydrogen as a fuel and the need for aftertreatments in hydrogen ICE vehicles remain areas for further development. The push for infrastructure development and funding, such as the Inflation Reduction Act, aims to expand the availability of hydrogen fuel, making it a viable option for internal combustion engine users.