This is a beautiful souvenir sheet, issued by Guinea in 2008, commemorating the oil crisis of 2008. Featured are the BMW Concept X6 ActiveHybrid concept vehicle, the Aston Martin V8 Vantage modern sports car, Austro-Hungarian automotive engineer & creator of the Volkswagen Beetle Ferdinand Porsche, the Porsche Hybrid automobile, and a brief written history of the peak oil crisis. The sheet is Michel catalog #5774/Bl. 1570, and is Post Office fresh, mint never hinged, and F/VF.