A German inventor says he's found a way to make cheap diesel fuel out of dead cats.
They are heated up to 300 Celsius to filter out hydrocarbon which is then turned into diesel by a catalytic converter.
He said the resulting "high quality bio-diesel" costs just 15 pence per litre.
Koch said the cadaver of a fully grown cat can produce 2.5 litres of fuel - meaning around 20 cats are needed for a full tank.
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