sentences:  Passenger compartment heat was powered by the battery pack as well as an auxiliary coolant circuit that was heated by the range extender engine.Renault sold about 500, primarily in France, Norway and the UK, for about 25,000 euros each and redesigned the Elect'road in 2007.With support from the South Coast Air Quality Management District, the California Air Resources Board, the National Renewable Energy Laboratory, the Electric Power Research Institute, and Volkswagen, Alan Cocconi of AC Propulsion converted a Volkswagen Jetta into a plug-in series hybrid.