Unofficial Opel Monza turbo-CNG Plug-in Hybrid website
(While only a concept vehicle, many upgrades demonstrated in the Monza concept will likely appear in the Volt and Ampera, plus other PEVs from General Motors and Adam Opel, AG. The 3 cylinder turbo CNG is cleaner, more powerful, 20% more efficient, but also lighter and smaller than the 1.6 gasoline engine it replaces)
Opel Monza turbo-CNG Plug-in hybrid----Concept
