A high school drop out from South India has made history by turning water into fuel using a herb he discovered in the hills near his home in Tamil Nadu state. According to the Press Trust of India, 30-year-old Ramar Pillai demonstrated his invention to scientists at the Indian Institute of Technology in New Delhi recently. They hailed it as a scientific breakthrough. 'We have no doubt that we are sitting on something very big,' said Mr Valangiman Ramamurti, secretary of the Department of Science and Technology. Mr Pillai claims his discovery can convert tap water into fuel for cars at just one rupee (22 cents) per litre. Mr Ramamurti said the department would give high priority to patenting Mr Pillai's invention.