Porsche has confirmed the launch of three new models ahead of its appearance at next week’s Detroit Auto Show.

Visitors to the show will see the 911 Cabrio for the first time. It will hit showrooms a few months after the Coupé variant of the 911 goes on sale in February.

Pricing is unannounced, but the vehicle is believed to boast a 3.8-liter V6 engine producing 294kW of power, with a seven-speed automatic transmission.

Luxury carmaker Bentley says that its sales surged last year on the back of strong performances in China and the United States, the world’s two biggest auto markets.

Total sales soared 37 percent to 7,003 vehicles last year, said Volkswagen‘s upmarket British-based division in a results statement.

Bentley, which is headquartered in Crewe, England, said sales rocketed by 69 percent in December alone to 1,059 cars, compared with the same month in 2010.

Update: BMW announced January 5 that US sales totaled 247,907 throughout 2011, beating Mercedes-Benz to the top spot by just 2,715 vehicles.

In a first, two German manufacturers — Mercedes-Benz and BMW – are dueling for the honor of being the top luxury brand sold in the United States.

Right now, BMW holds a slight lead, but US sales for Mercedes surged in November, climbing more than 40 percent.

This Ferrari 360 Modena limousine was created by cutting a regular 360 Modena in half and adding seats in the middle to provide interior room for eight people.

There is one large flat screen on-board plus several smaller screens set into the head rests. It also has a state of the art sound system and fibre optic disco lighting.

Estimated at £250,000 ($390,000), this is the fastest limousine in the world – it can hit a top speed of 166 mph.

The 2011 911 Speedster art car was created by famous artist Miguel Paredes in collaboration with Champion Porsche for the 2011 Art Basel.

Miguel Paredes, born and raised in New York’s Upper West Side, is an urban realist that specializes in New York graffiti art.

Paredes designed a psychedelic Japanese-inspired visage on the 911 Speedster, replete with colorful tones, a geisha on the hood, and lots and lots of flowers.

Bugatti has unveiled the Super Sport Edition Merveilleux. The one-off model is apparently a birthday present for a mysterious Chinese man named Simon.

This special Super Sport model is distinguished by an unpainted carbon fiber body, blacked-out alloys and brightwork, and a bright blue interior.

The Edition Merveilleux is unveiled in a special video (below) wishing the owner of the latest one-off Bugatti a happy birthday.