2007 Opel Vectra HCCI Concept Car
2007 Opel Vectra HCCI Concept Car 2007 Opel Vectra HCCI Concept CarGM demonstrates the HCCI combustion process in an Opel Vectra concept vehicle. When combined with several additional advanced technologies, HCCI provides up to 15 percent fuel savings, while meeting future emissions standards.www.gmeurope.info
