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A first look at the Audi TT RS plus

Audi is taking aim at the new Porsche Boxster and its yet-to-be-revealed sister model, the upcoming second-generation Cayman, with a spectacular 174-mph version of the TT RS, pictured here officially for the first time. Called the TT RS plus, the powered-up coupe and roadster pairing is set to join what is shaping up as a formidable display of new Audi models--including the third-generation A3 and the RS4 Avant--at the Geneva motor show in early March. The centerpiece of the new range-topping TT is a tuned version of Audi's turbocharged 2.5-liter, five-cylinder direct-injection gasoline engine as used by the go-fast TT RS, the RS3 Sportback and the limited-production A1 quattro.

Porsche 918 RSR

Following an absence of four years from the NAIAS, Porsche had been promising an all new concept to its North American contigency. The 918 RSR is exactly that. Evolving from the 2010 918 Spyder concept shown in Geneva, the RSR stays true to the overall theme of the Spyder but adds a roof and race-specific elements.

2009’s Fastest cars 0 to 60 mph: The AutoWeek list

Bugatti Veyron 16.4 0 to 60 mph: 2.6 sec (est) Base price: $1,500,000 Our take: The holy grail of power, the Veyron boasts more than 1,000 hp with four turbos. Lamborghini LP670-4 Superveloce 0 to 60 mph: 3.1 sec (est) Base price: TBA Our take: Soon to be released, the Superveloce promises to be the fastest bull ever. Koenigsegg CCX 0 to 60 mph: 3.1 sec Base price: $912,137 Our take: With CCX standing for Competition Coupe X, the Swedish Koenigsegg boasts more than 850 hp and a top speed of 245 mph.