For nearly three decades, hydrogen fuel cells and hydrogen internal combustion engines (ICEs) have been evolving, bringing about improvements in functionality and energy output. While hydrogen fuel cells have become more compact and efficient, they still rely on ultra-clean hydrogen and controlled atmospheric conditions. On the other hand, hydrogen ICEs offer a more robust solution, with recent advancements making them a viable option for heavy-duty trucks and other vehicles. The Alpine Alpenglow Hy4 stands out as a groundbreaking concept car that features a four-cylinder hydrogen ICE delivering 340 bhp and utilizing a water injection system for combustion moderation. This innovation not only showcases the potential for hydrogen ICE technology in racing but also hints at its future integration into passenger vehicles. The successful adoption of hydrogen ICEs by companies like MAN, Volvo, JCB, and others further underlines the growing acceptance of this technology in various transport sectors, pointing towards a potential shift in the automotive industry.