The 911 is the most successful model in Porsche’s history. It started its long history back in 1963 and since then Porsche has offered five distinct generations: 911 classic, 964 Series, 993 Series, 996 Series, and 997 Series. After a long wait and a hi-jacking of the official images, Porsche has revealed its sixth generation ahead of its official debut at the 2011 Frankfurt Motor Show.It may be a little unorthodox for Porsche to be bringing out a new generation 911 despite the fact they just revealed a facelift version, but the requests keep changing and Porsche must answer the call of duty. Their latest target is improving both fuel consumption and CO2 emissions.The sixth generation 911, or the 991, will be a completely new vehicle, even though everyone will recognize it as a 911 model. Shortly after the launch of the 998 911, Porsche will also be releasing the Turbo, GT2, and GT3 in 2012.Porsche describes the new 911 as having a flat stretched silhouette, exciting contours, and precisely designed details. The vehicle’s body is constructed of aluminum-steel and provides the Porsche with a weight reductions of up to 45kg (or about 99 lbs). The weight reduction is matched up with aerodynamic optimization, providing reduced lift while retaining a good coefficient of drag value. An example of the aerodynamic changes is the new wider, variably extending rear spoiler.Compared to the car it replaces, the next generation 911’s wheelbase is about 100mm longer. This, plus the reduced height of the vehicle, will provide an even more muscular stance to the new 911. The Porsche’s classic wide arched wings extend to an even wider front track, giving off a visual impression of width. These wider attributes are matched up with new wheels, in sizes of up to 20\". The exterior has also received remodeled exterior mirrors now located on the upper edge of the doors as opposed to the mirror triangles as seen on previous models.