Mahle, a major manufacturer and auto supplier, is leading the way in transforming heavy-duty vehicles for sustainability by introducing hydrogen technology. Dr. Marko Worth, a lead engineer at Mahle, explained how existing diesel engines can be converted into hydrogen-powered engines with minimal modifications to achieve sustainability. Mahle has already developed parts to retrofit diesel engines into hydrogen-powered ones, showcasing a 7.8-liter diesel engine converted successfully. The conversion process involves adapting the engine's head unit and pistons to accommodate the lower combustion temperature of hydrogen. While progress is being made in converting engines, the main hurdle lies in the lack of hydrogen filling infrastructure, making hydrogen fuel expensive. However, the adoption of hydrogen on commercial vehicles could drive infrastructure development and potentially halve hydrogen prices in the future. Toyota Mirai, a hydrogen-powered car, has been a notable example, highlighting the technology's potential. Despite challenges, Mahle aims to use these innovations initially for generators and gensets before widespread implementation. The article emphasizes the need for overcoming infrastructure challenges to fully realize the benefits of hydrogen technology for heavy-duty vehicles. The potential for repurposing existing diesel engines into hydrogen-powered ones offers a promising sustainable solution for the transportation sector. As the industry works towards establishing a robust hydrogen infrastructure, the future of hydrogen-powered vehicles, such as Toyota Mirai, holds promise for a greener and more sustainable transportation landscape.