I friend of mine has just had a fuel conversion magnet fitted to his 1.0-litre Nissan Micra, and says that the engine runs sweeter, the performance is increased and fuel consumption is up by about 7 per cent. The device cost about £50. Have you heard about this? If it is as good as he claims, how come it's not in the news? The savings for fleet car users, haulage contractors, bus and coach companies etc could be significant. Fitting it is simple, as it just clips onto the fuel line near to where it goes into the carburettor or fuel injection system.