Japanese automaker Toyota introduced futuristic plans for its traditional internal combustion engines in Tokyo, aiming to embrace green fuels and electric motors. Toyota announced the development of lean compact engines that can run on green fuels like hydrogen and bioethanol, or be paired with electric motors in hybrids. The company's Chief Executive highlighted the engine's optimization for the electrification era, emphasizing a push towards carbon neutrality. Collaborating with Subaru and Mazda, Toyota showcased a multi-pathway approach to meet stringent emissions standards. While the details of the engines' market release remain undisclosed, the companies are working towards ecological engine designs. The importance of a gradual shift to electric vehicles was stressed due to global energy supply conditions and the economic impact on the automotive industry. Experts acknowledged the role of electric vehicles in reducing emissions but raised concerns about the environmental impact of lithium-ion battery production. While challenges remain, innovations in battery electric vehicles are deemed necessary for a sustainable future, although a complete shift may take decades to achieve global carbon neutrality.