Just been listening to BBC R4 programme where they were speaking to Sean McCarthy who claims to have perfected a process that will provide unlimited energy forever without the need for any fuel. He has challenged the world's scientists to test his invention and placed an ad in a national magazine (I think it was the economist) He claims that it will power anything from a mobile phone to a car. The system uses magnetic fields similar to an electric motor - but does not require connection to a power source!