Enhanced models due to debut at NAIAS

Several automakers have taken the wraps off powerful new models due to be released at the North American International Auto Show, which begins tomorrow in Detroit.

Cadillac has released preview pictures of the CTS-V Coupe, hot on the heels of the new CTS Coupe unveiled at Los Angeles. The V-series CTS features a 556-hp supercharged 6.2L V-8 engine, dwarfing the 304 hp 3.6L V-6 engine offered in the standard model. It is the most powerful engine in Cadillac's history, and will propel the CTS-V from 0-60 mph in 3.9 seconds. The car is available in either manual or automatic transmission.

"The CTS-V Coupe marries our most potent and sophisticated technology with our most dramatic production design," said Bryan Nesbitt, Cadillac general manager. "This combination of visual and technical attributes is designed to create a very compelling choice for luxury sports car consumers."

Fellow GM brand Buick will also unveil the new Regal GS, a high-tech, high performance version of the Regal sedan. The model, like its sister, is based on the Opel Insignia, but includes a 255 hp turbocharged 2-litre engine. BMW, meanwhile, will stage the global debut of the BMW Z4 sDrive35is, a high-power version of the Z4 roadster.

Some 30 global debuts are expected at the show, one of the most influential in the automotive calendar. Although this year's Los Angeles show has already hosted several high-profile debuts, organizers of NAIAS promise that there is more in store when the event kicks off on January 11.