There's more tinted glass on show at Paris than a specs sale for bodyguards, and Porsche is in on the act with its new versions of the 911 Targa 4 and the 911 Targa 4S.

The two new versions of the 11-series are all-wheel drive and boast a slightly wider rear than their predecessors.

Of course, the Targas keep the eponymous glass roof and foldaway rear window, allowing curious passers-by to keep tabs on your broadening bald spot.

And before you say, it's not a solar panel for a sex machine.

The 2007 911 Turbo may be unmatched in its breadth of performance. Few machines can so easily warp our perception of what is possible from a state-of-the-art performance car, and yet so ably serve as a practical and comfortable conveyance for every-day driving. The new Porsche 911 Turbo features a revolutionary 480-horsepower, twin-turbocharged, 3.6-liter boxer engine with the world’s first gasoline-engine application of variable turbine geometry (VTG), a redesigned all-wheel-drive system, and evolutionary styling.

The new 911 Turbo’s engine produces 480 hp at 6,000 rpm, 60 bhp more than its predecessor, raising specific output of the 3.6-liter boxer-Six to an all-time high of 133 bhp per liter. More notable is the engine’s torque curve, which has been bolstered and broadened by the variable turbine geometry system. Peak torque rises to 457 lb-ft (previously 415 lb-ft), but that peak now spans an extended rpm range from 1,950 to 5,000 rpm, compared to 2,700--4,600 rpm in the previous 911 Turbo. Additionally, a function in the optional Sport Chrono Package allows a 10-second, mid-rpm-range ‘overboost’, temporarily increasing turbo boost under full throttle by 2.9 psi, and swelling peak torque to 502 lb-ft.

A 911 Turbo equipped with the optional 5-speed Tiptronic S automatic transmission requires only 3.4 seconds to sprint from 0 to 60 mph. Equipped with the standard six-speed manual transmission, the new 911 Turbo reaches the same 60 mph mark in 3.7 seconds. With either gearbox, the top track speed of the new 911 Turbo is 193 mph.

Much of the 911 Turbo’s improved performance can be attributed to the variable turbine geometry system, the first such system available on a turbocharged gasoline engine. The heart of the technology is adjustable guide blades, which can vary in angle to most effectively guide engine exhaust flow onto the turbocharger’s impeller wheel. The result is a system that provides the advantages of both a small and large turbocharger, improving flexibility and acceleration, particularly at low engine speeds.

To transfer this power to the road, the new 911 Turbo features a redesigned all-wheel-drive system, with an electronically controlled multi-disc clutch replacing the previous model’s viscous clutch. Porsche Traction Management (PTM) allows variable power distribution fore and aft, and depending on conditions, the system’s electronics constantly determine optimal torque distribution to ensure ideal traction. In use, PTM provides exceptional agility on winding roads, outstanding traction in inclement conditions, and impressive active safety even at higher speeds. Though powerful, the 911 Turbo’s PTM setup is one of the lightest all-wheel-drive systems on the market.

The new 911 Turbo’s accelerative performance is duly tempered by its brake system, which is comprised of six-piston monobloc calipers up front, and four-piston monobloc calipers at the rear. Brake disc diameter at all four corners has been increased 20 mm, to 350 mm (13.78 in.). Optional is Porsche’s Ceramic Composite Brake system (PCCB). In addition to the exotic pad and rotor material, the PCCB option provides an increased front disc diameter (380 mm /14.96 in.), absolute corrosion resistance, improved fade stability, and a 37-pound unsprung-weight savings versus the standard brake system.

Styling changes made to the new 911 Turbo are evolutionary. The modified front end features tautly drawn cooling air inlets, widely spaced and deep-set fog lights, and new LED indicators situated in the lateral air inlets. From the rear, the Turbo takes on a more powerful stance thanks to a tail 22 mm (0.9-in.) wider than that of the previous model. The redesigned wing spoiler has been aligned to the wider profile, and slopes downward slightly at each end to nestle the rear fender’s contours. The lateral air inlets behind the doors have also been redrawn, and together with the new air ducts, afford a more efficient supply of cooling air to the intercoolers.

Dr.Ing. h.c. F. Porsche AG, Stuttgart, Germany, will be sending the new 911 Turbo Cabriolet to the starting line on September 8. The 20-year tradition within the 911 Series of the 911 Turbo with a classic soft top is continued with this open top model. Firstly, the open 2+2 seater offers the driving performance of a high-performance sports car while still providing convertible driving pleasure. Secondly, compared to the competition the 911 Turbo Cabriolet is economical in its fuel consumption, thanks to its deliberate design, outstanding aerodynamics and advanced engine technology

As with the 911 Turbo Coupe, the Cabriolet will also be powered by a 3.6 liter six-cylinder boxer engine with biturbo turbocharging and Variable Turbine Geometry (VTG). The powerplant already generates 480 hp (353 kW) and 620 Nm of torque at 1950 rpm. With the new, optional Sport Chrono Turbo Package, which includes an overboost function, up to 680 Nm is even intermittently possible. The manual transmission version can accelerate from 0 to 100 km/h in just four seconds. With Tiptronic S the time can be cut to 3.8 seconds. Both versions can reach speeds of up to 310 km/h. Fuel consumption for the 911 Turbo Cabriolet is 12.9 liters per 100 kilometers an exemplary value in the competitive environment.

In spite of the convertible-specific reinforcement of the chassis and automatic and the extendable rollover protection behind the rear seats, the open version of the 911 Turbo only weighs 70 kilos more than the Coup. The light, three-layer soft top, which can completely automatically be opened or closed in roughly 20 seconds, enables a low balance point.

Together with the running gear that is tuned to convertible-specific needs, which includes the active suspension system Porsche Active Suspension Management (PASM) as standard equipment, the new 911 Turbo Cabriolet offers the sporting driving performance typical for a Porsche 911 as well as extremely high driving safety together with appealing driving characteristics. The driving stability control Porsche Stability Management (PSM) and the managed all-wheel drive Porsche Traction Management (PTM) also contribute to its uncommon performance. The system with an electronically controlled multi-plate clutch can, according to the requirements, alternatively shift the drive output from the engine between the front and rear axles, and with shift intervals of a maximum of 100 milliseconds quicker than the reaction of the engine to load changes.

With a drag coefficient of Cw=0.31, the 911 Turbo Cabriolet travels at the level of the coup models. Together with the rear spoiler, which automatically extends at speeds from 120 km/h extending 30 mm further than with the Coup, the vehicle is the only standard series convertible that generates negative lift at the rear axle. Along with its passive safety systems, including six airbags as standard equipment and the comprehensive rollover protection system with steel tubing integrated into the windshield frame and an extendable rollover protection behind the rear seats the 911 Turbo Cabriolet also fulfils all legal requirements for passive safety applicable in the worldwide sales markets. Furthermore, it is equipped with one the most high-performance brake systems. The six-cylinder fixed-brake caliper up front stems from the Porsche Carrera GT. Upon request, the race-proven and light Porsche Ceramic Composite Brake (PCCB) ceramic brake system is also available for the 911 Turbo Cabriolet.

Also included in the extensive standard series equipment of the 911 Turbo Cabriolet are Bi-Xenon headlights, 19 inch forged wheels with two-tone appearance, an air conditioner, the wind deflector, the Porsche Communication Management (PCM) with the navigation module and 5.8 inch color monitor and the Bose Surround Sound System, among other things. The basic price in euro for the Turbo Cabriolet is EUR 126,600. In Germany the price is EUR 150,862 (including VAT and country-specific requirements).