Toyota continues its investment in hydrogen internal combustion engine (ICE) technology as part of its strategy for automotive decarbonisation. The Japanese carmaker has been exploring hydrogen ICE alongside fuel-cell technology, with a focus on developing the former for mainstream use in the next decade. While hydrogen ICE engines are still in the trial phase, Toyota sees potential for their growth by 2035-2040. The company's commitment to hydrogen power was demonstrated through a pilot program involving hydrogen-powered HiAce prototypes, where fleet operators tested the vehicles and provided feedback. These prototypes, powered by a modified V6 engine running on hydrogen, showed potential for future applications. Despite the lower power output compared to traditional petrol engines, Toyota sees this as a step towards embracing sustainable transportation solutions. Toyota's approach to hydrogen technology reflects a long-term vision for the industry, with plans for continued development and potential mainstream adoption in the coming years.