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Meet the new Mercedes-Benz SL400

This is our first photo of the upcoming Mercedes-Benz SL400 luxury roadster, a model that effectively replaces the SL350 as part of a series of subtle changes brought to the SL lineup. The move aims to goose sales of the luxury roadster two years after it first hit showrooms. The SL400 is powered by Mercedes-Benz's twin-turbocharged 3.0-liter V6 direct-injection gasoline engine unveiled in the E400 early last year.

Volvo uses Facebook to research new interior solutions

Volvo is using Facebook to conduct market research into how drivers use their cars' interiors via its new 'You Inside' app. Users are asked to create a personal profile that includes the car they drive, their lifestyle and a list of day-to-day items they keep inside their car. The aim is to identify new design solutions based around qualitative data.

Citroen Numero 9 'will influence all future DS models'

Citroen's Numero 9 concept car previews the new face of all future DS cars from the French manufacturer, the design chief told CAR. Thierry Metroz, director of design in Paris, said the Numero 9 was an ideas car, but admitted it would influence the look of production cars in the near future. 'Look very closely at the grille - it is much more three-dimensional,' he said.