August Achleitner,head of 911 model line (right), and Thomas Krickelberg, powertrain project manager of 911
Bar gallery: A brilliant display of evolution in the underground garage of the Porsche Museum in Stuttgart-Zuffenhausen - the 911 Targa 2.0, 911 SC Targa, 911 Carrera 2 Targa, and 911 Targa 4S.