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Porsche Cayman GT4 looks sexy, rapid in the nude

Porsche doesn't officially have a name for its more hardcore version of the Cayman, yet. The speculation is that the coupe is called the GT4 as a little brother to the 911 GT3. However, the German sports car maker apparently is not interested in keeping the model's looks much of a secret because these latest shots show it without a hint of camouflage to speak of. The GT4 reportedly takes the GT3's ethos of more power, less weight and stickier-than-glue handling and brings it all to the Cayman. As these photos show, there's a much lower air dam up front with a cooling vent at the tip of the hood. Larger wheels are another obvious addition and are likely shod with some very sticky rubber. At the back, there's a double spoiler combining a wing and a ducktail. The power and gearbox for the GT4 remains a mystery, though. The rumor is that it uses a tuned version of the 3.4-liter flat-six in the Cayman S and GTS to make between 370 and 400 horsepower. A similar overhaul of the Boxster might be on the way, as well. A version of the convertible wearing some of the Cayman GT4's goodies was recently spotted testing. That one even had a manual transmission to make the prospects behind the wheel even more exciting.

Mercedes-AMG GT S pit against Porsche 911 Turbo in Evo Deadly Rivals test

When Mercedes-Benz announced that its all-new AMG GT would start at $129,900 deeply undercutting the $200,000-plus of its predecessor, the SLS AMG, immediate questions focused on how it'd stack up against the latest crop of high performers that occupy the mid-$100,000 range. Evo, over in the UK, didn't have to wait all that long. The latest installment in the outlet's "Deadly Rivals" series compares the AMG GT with the latest Porsche 911 Turbo. On paper, the test is sure to be interesting. The Mercedes uses a 4.0-liter, twin-turbocharged V8 with 503 horsepower and 479 pound-feet of torque, while a seven-speed AMG Speedshift dual-clutch shuffles power to the back axle. The 911 Turbo's formula is more of a known quantity – 520 hp from a twin-turbo, 3.8-liter flat six with the company's own PDK working in unison with all-wheel drive, torque vectoring and rear-axle steering. Of course, we're not going to spoil the results for you. Take a look at the video up top, and let us know what you think of Evo's latest track battle.

Pininfarina teases its Tesla- and Bugatti-baiting EV supercar

Pininfarina isn't being bashful when it comes to getting into the car business. The Italian design house has revealed a sketch of the PF0 Concept, an electric supercar aimed directly at the world's fastest and most expensive vehicles. With upward of 1,000 horsepower, along with an expected price in the millions of dollars, this extreme EV is meant as a calling card for Pininfarina's upcoming range of electric cars and SUVs. So should the likes of Tesla, Porsche, Ferrari, Bugatti and Lamborghini be worried? Pininfarina might be new to building its own cars, but the company has many decades of experience designing and engineering some of the most desirable cars of all time — including many of the finest supercars to have worn a Ferrari badge on their nose. As we reported earlier this year, Pininfarina has teamed with Indian auto manufacturer, Mahindra, to develop a range of high-end EVs. With this roughly $500 million investment, not to mention some engineering help from Croatian supercar manufacturer, Rimac, Pininfarina aims to start high. The company will first introduce a hypercar, based on the PF0 Concept, within two years, then bring along a range of more affordable electric cars and SUVs. These will more directly take on the likes of Porsche Cayenne, Lamborghini Urus, and Tesla Model X. So yes, if you're in the business of building expensive cars, especially ones with a lot of batteries positioned inside them, Pininfarina's plans for the PF0 (that's a zero, not the letter "O," by the way) should make you sit up and take notice. "Automobili Pininfarina is a pioneering new business created to service the most discerning clients in the world," said Michael Perschke, CEO for Automobili Pininfarina. "Our product portfolio will launch with an innovative, zero-emissions hypercar that represents the progression we aim to make at the pinnacle of the luxury and sports car market." According to its press release, Pininfarina is currently presenting its "business and product plans to prospective retailer partners, clients and media in New York this week." After its tour of the Big Apple, look for Pininfarina to officially reveal the PF0 Concept during Monterey Car Week in August. Related Video: Design/Style Green Bugatti Lamborghini Porsche Tesla Electric Future Vehicles Luxury Performance Pebble Beach supercar mahindra hypercar Rimac