During the Suez crisis of the 1950’s, and the resultant petrol shortages, there were many inventors working on alternative fuels for the internal combustion engine. The news at the time ran many stories about water powered engines.
The theory was that if the elements of water could be separated into it’s component parts, oxygen and hydrogen, the hydrogen could be used to power engines whilst the only exhaust gas would be nice healthy oxygen.
Sadly the energy needed to separate the two elements far exceeded the power any hydrogen produced could possibly generate, thus rendering the process unworkable.
One of the aspiring boffins of this era was my great uncle Erasmus K Yampimon who produced the Yampi 850, a re-engineered tractor motor, that was intended to operate on his secret fuel formula based on a combination of Dandelion and Burdock and Andrews liver salts. Needless to say this didn’t work at all. Defeated and bankrupted, Erasmus retired to secure premises in rural Shropshire, where he toiled for the remainder of his days attempting to establish verbal communication with Butterflies and Moths.