Toyota has unveiled a revolutionary water-cooled hydrogen combustion engine, challenging the traditional use of hydrogen in vehicles. This breakthrough marks a significant milestone in sustainable mobility, offering a new approach to powering vehicles with improved efficiency and reduced emissions. The engine operates at an ultra-high temperature of 2500°C, surpassing conventional gasoline engines and providing better thermal efficiency. By utilizing a special dual injection system and water cooling technology, Toyota's engine allows for direct water injection into cylinders, enhancing combustion control and emission reduction. The innovative design also enables the engine to be constructed from lightweight materials, further improving efficiency by allowing higher engine revs. This advancement represents a major shift in the automotive industry, showcasing Toyota's commitment to innovation and environmental sustainability. The water engine's unique features have experts intrigued and highlight the potential for future advancements in zero-emission transportation.