cfcd208495d565ef66e7dff9f98764da.jpgIt's not often you get to lift the hood and watch a power struggle going on in the engine room of General Motors. But the vice-president of GM Europe, John Smith, has just provided tantilising details of the arguments over the rival bids for Opel/Vauxhall, the main European arm of the fallen U.S. auto giant. Smith is the chief negotiator on the sale of Opel.