KTM Dallara Challenge ; The X-Bow is back in production trim as the Dallara Challenge.

Austrian motorcycle maker KTM stunned the Geneva show last year when it presented the concept version of its X-Bow, the company’s first automobile. Designed primarily as a track car, KTM’s lightweight roadster, which tips the scales at less than 1500 lb., is powered by a 240-bhp turbocharged, direct-injection 4-cylinder engine from Audi. That engine is mated to a 6-speed manual gearbox.

The X-Bow is back in production trim as the Dallara Challenge. This extreme machine is designed to compete in a spec racing series named after the legendary Italian race-car maker that builds all the chassis for the X-Bow.Although the car is powerful and light weight, top speed is not the prime consideration in the X-Bow’s development. Rather, the car emphasizes handling, in which aerodynamics plays a crucial role. As a result of extensive testing in Dallara’s wind tunnel, the X-Bow is fitted with a unique rear diffuser that helps to generate 440 lb. of downforce.

KTM claims the X-Bow is capable of pulling 1.23g on the skidpad.Even though the X-Bow was conceived as a track car, it has a 2-passenger cabin, leaving the door open for street homologated versions of the car and perhaps even a closed-cockpit version.

TechArt GTstreet

Aftermarket tuners, especially German ones, simply love the Porsche 911 Turbo. TechArt is no different, turning its considerable talents to Zuffenhausen’s 997 edition of the 911 Turbo to create one of the most potent street-legal machines ever.

The GTstreet edition turns up the boost on a pair of BorgWarner Variable Turbine Geometry (VTG) turbochargers to add an extra 150 bhp, extracting a total of 630 bhp and 605 lb.-ft. of torque from Porsche’s 3.6-liter flat 6 engine.

This massive infusion of power produces some stunning performance figures. According to TechArt, the GTstreet is capable of 0-62 mph acceleration of just 3.2 seconds and a top speed of 214 mph. In just 10.9 seconds, the car can reach 124 mph.

In addition to the engine modifications, the GTstreet is equipped with carbon- ceramic brakes with 6-piston front and 4-piston rear calipers. The all-wheel-drive system with its factory installed stability-control system is retained.

Extensive wind-tunnel testing resulted in a striking body design. The GTstreet has larger front openings, a front splitter and lower, wider side rockers that channel air upward into the rear intakes. At the rear is a large wing set at an optimum angle to generate the downforce needed to counteract lift when the car is at top speed.

Rinspeed sQuba Concept

Swiss car designer Frank M. Rinderknecht has a fascination with the 1977 film The Spy Who Loved Me, wherein James Bond’s Lotus Esprit was able to drive underwater. In that vein, Rinderknecht’s latest Rinspeed creation is a Lotus Elise converted into “the world’s first real submersible car,” according to the company. The conversion was largely performed by Swiss engineering specialist Esoro.

The mid-mounted combustion engine of the Elise was replaced by three electric motors (powered by rechargeable lithium-ion batteries)—one provides propulsion on land, the other two drive the screws for navigating the underworld; two Seabob jet drives are located up front, which breathe through special rotating louvers to open and close the water intake. All of which make the sQuba a zero-emissions vehicle.

When driving on land, the sQuba’s stainless coil-over suspension by KW automotive and large Pirelli tires on custom wheels from AEZ should provide better handling than your typical amphibious vehicle.

The sQuba is functional to a depth of 10 meters, but for safety reasons as the car submerges, the interior (done up by Strähle and Hess to be saltwater resistant, with mother-of-pearl trim and diamond-plated, non-slip inlays from KGS Diamond) gets filled with water. In scuba-diving fashion, an onboard tank of compressed air provides oxygen for the occupants. Bathing suits (or water-resistant clothes) recommended.

Lorinser Nardo3 SL

If you’re looking for the ultimate bad-boy ride, Lorinser may have your number with the Nardo3 SL, a pumped-up version of the Mercedes-Benz SL 2- seater.

Named after the famed high-speed Italian oval, the Nardo3 is simply a beast. The German tuner has worked its magic on the twin-turbo 6.0-liter V-12, boosting output to an amazing 660 bhp and promising a top speed of 220 mph. Even more awe inspiring is the 747 lb.-ft. of torque.

The Lorinser Nardo3 has been fitted with all sorts of aerodynamic devices that not only keep the car firmly planted to pavement when traveling triple digit speeds, but also adds to the outlaw aura. The front and rear fascias have been modified with extra inlets to improve airflow to the engine and brakes.

There’s also a new scoop ahead of the rear wheels and a corresponding exhaust outlet behind the rear wheels that also aids in brake cooling.All this muscle does not come at the expense of comfort. All the cockpit amenities that you’ve come to expect from this Mercedes-Benz flagship have been left intact.

Not only is the car fast, it is exclusive. Only 50 copies will be produced by the German tuner.

2009 Rolls-Royce Phantom Coupe

In 2007, Rolls-Royce sold 20 percent more cars than the year before. Since BMW took over one of the most traditional British brands in 1998, only Emily (the nickname of the Flying Lady that adorns the cars’ grilles) remains. Today, Rolls-Royce resides in Goodwood, U.K., manufacturing its Phantom models. After this summer, this Phantom Coupe will be added to the model mix.

Based on the Drophead Coupe soft-top, and sharing most of its dimensions, the closed version comes with upgraded suspension and will therefore be the sportiest Rolls in the range. It also retains the Drophead’s unique suicide-style doors. The engine and corresponding power remain the same, but its 453 bhp and 531 lb.-ft. of torque from the 6.75-liter V-12 should be more than adequate. It delivers power to the rear wheels via a 6-speed automatic transmission. Incidentally, the fuel capacity has been increased by 25 percent over the convertible version. The lower tailgate can be positioned to create a seating platform for two adults, called the “picnic boot.”

The Phantom Coupe is a massive automobile in the grandest of tradition. Riding on a 130.7-in. wheelbase, the new coupe measures 220.8 in. in overall length and has 21-in. wheels. Priced at Euro 360,000 (the U.S. price has yet to be given), the Phantom Coupe is for the lucky few

2009 Maserati GranTurismo S

One year after the GranTurismo coupe’s debut, it’s time to rev the car up a bit. The new GT S version can be recognized by its sinister alloy wheels and by its extra howl, coming from the exhaust pipes of the larger 4.7-liter V-8, up from the original 4.2 liters, which now packs a 440-bhp punch (up from 405).

Also new is an electro-actuated transaxle-mounted gearbox with sequential paddle shifters and an automatic clutch. The so-called MC-Shift system was adapted from Maserati’s exotic MC-12 mid-engine racer.

The GranTurismo S also benefits from new brakes, developed in conjunction with Brembo initially for the larger Quattroporte S sedan. The revised braking package feature front rotors made with a dualcast technology, which casts the units out of iron and aluminum. These discs are paired with aluminum mono-block calipers with six pistons.

The GranTurismo rides on a 115.9-in. wheelbase and is 192.3 in. in overall length. The GranTurismo’s sexy shape was created by the Italian design house of Pininfarina.

In addition to minor detail changes on the car’s body, the interior has been freshened with the use of Poltrona Frau leather and Alcantara inserts distinguished by horizontal piping on the seats and seatbacks.

2009 Bentley Brooklands

It's tough to get more "automotively English" than Bentley and Brooklands.

The former is, of course, the famous automaker while the latter is a historic- if-now-defunct high-speed race track near London. Put the two names together in 2008 and you have a new coupe that is the sum of 6.75, 530, 774, 3, 5.0 and 340,990.

How does it add up?

You begin with the chassis of the Bentley Azure convertible, already stiffened to be a luxury drop top. Add a steel coupe roof while retaining in all but one piece of the convertible structure, and you have a very rigid automobile. Make certain that top matches the lower body, give it an air of luxury and style and add the name Brooklands.

Now here come the numbers. Take the rather traditional Bentley V-8, displacing 6.75 liters, add a pair of turbochargers and the appropriate internal changes needed, and you come away with 530 horsepower and 774 lb.-ft. of torque. The 3 is an approximate number, but represents the Brookland's weight in tons with driver and passenger. That 5.0 is the number of seconds to get the big Brooklands to 60 mph. You've probably guessed that $340,990 is the base price of the Brooklands coupe. With options and taxes you may be closer to $400,000.

It is a beautifully done machine, from its hand-finished body seams to the highly polished solid wood trim to the military straight stitching. Bentley says this is the most commodious coupe cabin in the world, and it feels like it when you're stretched out in back enjoying the countryside blur by.

With the exception of new uprights to allow for the optional ($30,000) carbon- ceramic brakes, the suspension pieces also carry over from the Azure, though tuned to sportier — as in firmer and flatter — performance.

It is a mighty thing to stomp the gas, feel the back end slew a bit as the power bites and rushes the great machine forward. Once the road starts winding, the Brooklands is surprisingly agile though it is somewhat light-steering. Mind you, as it edges right, then left down the road, you will never forget this is one big, heavy machine... nothing cat like about it. But as a piece of traditional British automotive power, it is impressive.