Lamborghini Murcielago,Porsche 911 Targa ,Dodge Viper SRT10,gall
Lamborghini Murcielago
Lamborghini has unveiled the 2007 Murcielago LP640, a refreshed version of its range-topping supercar. The new Murcielago is powered by a 6.5-litre V12, longitudinally mounted behind the driver (LP in LP640 means longitudinale posteriore). The engine's increased displacement means output jumps to 631 hp at 8,000 rpm. 0-62 mph is accomplished in just 3.4 seconds that's nearly half a second faster than the regular model. A new six-speed gearbox with an optional sequential paddle shift undoubtedly helps achieve those numbers. The carbon fiber exterior has been enhanced with sharper lines, new 18-inch rims enhance the overall appearance, and new outrageous 13.5 inch-wide tires deliver all that power to the ground. The interior has also been revised for increased comfort. The vehicle is expected to be sold a premium model above the standard Murcielago.
Porsche 911 Targa
Porsche today announced the 2007 Porsche 911 Targa (997), which, for the first time, will be sold with all-wheel-drive only. The Targa 4 is powered by the familiar flat-six engine, delivering 325 hp of power from 3.6 liters. It accelerates the car from 0 to 62 mph in 5.3 seconds and reaches a top speed of 175 mph. The more powerful S variant features a 3.8-liter engine producing 355 bhp. This model sprints to 62 mph in 4.9 seconds, and has a top speed of 180 mph. Thanks to Porsche’s VarioCam Plus valve control system, the Targa 4 develops maximum torque of 370 Newton meters at 4,250 revolutions per minute. The equivalent for the S version is 400 Newton meters at 4,600 rpm. Power transmission is via a six-speed manual gearbox with short, precise shift strokes. Optionally, customers can choose Porsche's five-speed Tiptronic S automatic transmission. The basic euro-price for the 911 Targa 4 is 79,000 euros, or 87,900 euros for the 911 Targa 4S.
Jaguar XKR GT3
Apex Motorsport and Jaguar today revealed the XKR GT3 at the Autosport International Show in Britain. The Jaguar XKR GT3, featuring a 4.2 litre V8 supercharged engine, retains the aluminium body of its production cousin, but has had modifications made in line with the regulations.
The first car to be built by Apex Motorsport has already been sold to Stuart Scott, Managing Director of East Anglia’s most successful travel management company, Cambridge Business Travel. Scott, who has most recently been racing in the British GT Cup, will be driving the Jaguar in a program of six events with a yet-to-be-named co-driver.
Mercedes-Benz announced today that it will offer the SLR McLaren super sports car in the form of a roadster. Powered by a supercharged (Kompressor) 5.5-liter, 617-hp AMG V8 engine, the SLR McLaren Roadster can achieve a top speed of 207 mph.
Coupled to an AMG Speedshift R five-speed automatic transmission, the engine delivers maximum torque of 575 pound-feet, and a zero to 62 mph time of 3.8 seconds.
Apart from two aluminium engine frames, its body is made entirely of carbon-fiber reinforced plastic (CFRP) materials. Its newly developed roof material - which is available in three different colors - offers desirable aerodynamics while up. Favorable aeroacoustics with the top down mean conversation is still possible at well over 120 mph.
gallardo nera
The Nera is something of a showcase of Lamborghini's personalization choices available to all Gallardo customers. The vehicle features a glossy black paint scheme with matte black inserts. It has the same 520 horsepower V10 engine as the standard Gallardo, and the standard all-wheel-drive system. A total of 185 units will be produced. The vehicle was shown alongside the Lamborghini Murcielago LP640 Versace a custom version of its more expensive sibling.
Chrysler has revealed 
the 2008 Dodge Viper SRT10---- a more powerful version of its popular two-seat sports cars. It will arrive in Dodge showrooms in North America this summer. The SRT model gains an additional 90 horsepower from the new 8.4-liter powerplant, for a total of 600 hp and 560 lb.-ft. of torque.
Zero to 60 mph takes under four seconds, and 0-100-0 mph is completed in just over 12 seconds. The Viper SRT10's 8.4-liter engine breathes through new cylinder heads equipped with CNC-machhined combustion chambers, larger valves and Variable Valve Timing (VVT). VVT electronically adjusts when the exhaust valves are open and closed according to engine speed and load.
The Viper SRT10's V10 channels its power through a new, smaller-diameter, twin-disc clutch. The transmission is the latest evolution of the Tremec T56 six-speed manual, known as the TR6060. It features 10 percent wider gears for higher torque capacity and a new synchronizer package. Stopping power is another key attribute of the Dodge Viper SRT10 formula, with 14-inch brake rotors gripped by Brembo dual opposing calipers, good for 60-to-0 mph in less than 100