 Pakistani man Agha Waqar Ahmad claimed in July 2012 to have invented a water-fuelled car by installing a "water kit" for all kind of automobiles, which consists of a cylindrical jar that holds the water, a bubbler, and a pipe leading to the engine.He claimed the kit used electrolysis to convert water into "HHO", which is then used as fuel.The kit required use of distilled water to work.