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Top 5 most important cars at the 2013 Frankfurt motor show

The five most important memorable cars in attendance at the world’s biggest motor show Nothing is as controversial as irritating your core enthusiasts, and the Audi Sport Quattro concept risks doing just that. Its name and styling riff off one of the most iconic cars in Audi’s back catalogue – and in WRC history – yet the new yellow version unveiled at the 2013 Frankfurt motor show has abandoned the five-cylinder engine, manual gearbox, and respectable kerbweight of the 2010 Quattro concept. In its place, we’ve an RS7-based coupe with the power of a Lamborghini Aventador (691bhp), twice the claimed economy of a Golf GTD (113mpg), but only because of a twin-turbo V8 mated to a hefty hybrid powertrain, and that means this new Sport Quattro weighs as much as a Bugatti Veyron Super Sport (1845kg).

Aston Martin V12 Zagato confirmed for limited production

Aston Martin V12 Zagato confirmed for production It didn’t take a genius to work out that the Aston Martin V12 Zagato would not just be incarnated as the Zig and Zag cars for the Nurburgring, but as a proper production car. Not a production car in the true sense, but a limited edition car much like the Aston Martin Zagato’s gone by. In fact we reported some time ago that we expected the V12 Zagato to start a limited production run of either 89 or 99 cars as soon as the Aston Martin One-77 ends production, and that the target price would be in the £300-350k range.

Buick hopes 'Truth' site will set it free, help launch Regal

Call it the Fiesta Movement for grown-ups. To help launch the 2011 Regal sedan, Buick will host a social media Web site with videos from buyers supplied with flip cameras, just like Ford's campaign for the youth-oriented Fiesta small car. But the Regal site will feature reviews, not the playful commercials and local coming-out parties that characterize the Fiesta Movement.