Audi’s new A6 model series will soon welcome a new member into the family, the sporty S6 that was snagged by our spy photographers in Avant trim during testing in Germany. 
The prototype model was completely undisguised, however, there’s a reason for that. With the exception of some model specific details such as the telling quad tail pipes and unique alloy wheel designs, the S6 will remain unchanged from the A6 with the optional S-Line sport package. The latter adds an aero kit with restyled front and rear bumpers, among other parts.
Well now, that didn’t take long, did it? Less than three months after the presentation of the LF-Gh concept car at the 2011 New York International Auto Show and Lexus has already started testing the production model that will spawn a successor to today’s GS sedan at the Nürburgring circuit. 
Naturally, the Lexus GS prototype is covered in plenty of camouflage but not to the point that it discloses its styling similarities to the LF-Gh study.
Aside from the body proportions, details like the protruding side sills, the high rising belt line, the “dotted” LEDs and large grille up front, and even the alloy wheel designs, appear remarkably faithful to the concept.
The upcoming 2012 Bentley Continental GTC Speed continues its…European tour as the British firm’s engineers have left the Alps and headed down to the Nurburgring racetrack for some high-speed tests.
The next Porsche 911 will make its world premiere in base trim at the forthcoming Frankfurt motor show this September, but this will only be the first chapter of the 991 saga as the Stuttgart-based firm plans to create an entire range of sub models. 
The 911’s lineup will eventually grow to include numerous body styles such as coupe, convertible, Targa and speedster models as well as a variety of standard and limited production versions ranging from the entry level Carreras in two- and four-wheel drive layouts to the GT-spec track racers and the almighty Turbo, which our spies caught testing in Germany.
