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Audi R18 TDI dominates Le Mans 2011 test day

Le Mans echoed to the sound of racing cars on Easter Sunday as teams took part in the sole scheduled test day, and Audi's new R18 coupe dominated the LMP1 class. Le Mans 2011: classes and rules changes The Automobile Club de l'Ouest (ACO), the organisers of the annual 24-hour race, made several changes to the competition classes and technical specifications for Le Mans 2011, aimed at reducing costs, raising lap times and ending the dominance of turbodiesel endurance racers. Out went V10 and V12 engines in the LMP1 (Le Mans Prototype) class, and in came new capacity limits for all engines, intake restrictors and lower turbo boost limits on existing turbodiesels. Naturally aspirated petrols units are now limited to 3.4-litres, turbo'd petrols can be no bigger than 2.0, and turbodiesels are restricted to 3.7-litres.

Mercedes C63 AMG Black Series Coupe video promo

Mercedes C63 AMG Black Series Coupe video below Mercedes has produced a new video promoting the C63 AMG Black Series, complete with the latest Track Pack & Aerodynamic Pack on show. The new Mercedes C63 AMG Black Series Coupe may not have been given Mercedes’ latest V8 powerplant – the 5.5 litre bi-turbo – but it does a sterling job of propelling Mercedes titivated rep-mobile at great speed towards the horizon, with its 6.2 litre V8 capable of getting to 60mph in a shade over 4 seconds. Just in case you might think that driving round in a C63 AMG Black Series Coupe isn’t shouting loudly enough to your friends and neighbours that you’ve shelled out more than three times the price of an entry-level C-Class Coupe, Mercedes has thoughtfully offered a couple of options for the C63 Black Series – the Track Pack and Aerodynamic Pack – that will leave no one in any doubt that your particular C-Class is a cut above the rest.

Cadillac plans dealer, consumer support for CUE infotainment system

General Motors is taking a page from Apple's Genius Bar tech-support program as its Cadillac brand rolls out a new infotainment system. GM is requiring Cadillac dealers to designate two employees as certified CUE specialists--one in sales, the other in service--as experts to walk customers through the system known as the Cadillac User Experience, or CUE. GM also plans to hire 25 service representatives that it will scatter across its largest markets to field questions from both dealers and customers.