There are hybrids. There are diesel hybrids. But the diesel plug-in hybrid is still virtually unknown -- enough so that Volvo claims it's breaking new ground by starting production of the V60 diesel plug-in it's been preparing since 2011. The company still plans to manufacture only small numbers of the wagon at its Gothenburg factory, but it's clear all that talk in Geneva of 124MPG fuel economy and a 285HP combin
