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Autoweek in review: The Cayenne Turbo S gets more power, we drive the new Aston Martin Vanquish, and a Porsche 962 for the street

The 2013 Porsche Cayenne Turbo S will now have 542 horsepower. The Cayenne Turbo S will sprint from 0 to 62 mph in 4.2 seconds, with a top speed of 176 mph. Click here for more details.

McLaren P11 at Nurburgring – launch imminent

The McLaren P11 has been pounding round the Nurburgring ahead of a launch on 9th September Ahead of the launch of the P11, McLaren are pushing on with testing the P11, and our picture here is of the P11 pounding round the Nurburgring in final testing. The McLaren P11 is the first stage of McLaren’s plans to launch a range of three new cars in the next few years. The P11 is aimed directly at the new Ferrari 458 Italia and the Lamborghini LP560-4.

Driven: Lexus GS450h

Lexus' identity is still unclear, even 20 years after it launched. Toyota's premium brand has perpetually failed to establish a clear identity of its own due mainly to a lack of consistency and detail refinement across its products. Can the new GS change these perceptions?