India's plan to transition older vehicles to clean fuel technology includes a groundbreaking advancement by UNSW researchers. They have created a retrofit system that can operate on 90% hydrogen, cutting carbon dioxide and nitrous oxide emissions while enhancing efficiency by 26%. This system, currently in early stages, allows businesses to reduce emissions without disposing of valuable assets. By introducing hydrogen directly into the engine with independent injection timing control, the system efficiently utilizes low-quality hydrogen. Through a stratified hydrogen injection technique, the system can create varying concentration pockets within the engine, effectively reducing nitrous oxide emissions. These efforts align with India's push for eco-friendly mobility and hydrogen processing. UNSW aims to commercialize the retrofit kits, catering to fleet and generator operators. Additionally, other brands like HYDI are developing innovative solutions, such as a Direct Injection Device that generates hydrogen while driving, reducing fuel consumption by 5–13% and requiring only water top-ups for operation.