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40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.

Porsche undecided on new 911 GT2 [w/poll]

Fans of hardcore 911s had it pretty good with the last 997 generation. There was the GT3, GT3 RS, GT3 RS 4.0, GT2 and GT2 RS (pictured above). Each one was faster, more powerful and more expensive than the one below it, but what they all shared was what Porsche purists love most: rear engine, rear drive, a manual transmission and little else.
So far with the new 991, Porsche has only released a GT3 version. Sure, there have been other models, but they're all decidedly more luxurious and less performance-focused. And as impressive a machine as the new GT3 is, it has run the risk of alienating some of its most ardent fanatics with technological interference in the form of a seven-speed dual-clutch transmission and four-wheel steering. So what those purists have really been looking forward to is a more hardcore GT3 RS or new GT2. But those may not be coming so quickly.
Speaking with 911 project chief August Achleitner, Car and Driver reports that a new GT2 is anything but a foregone conclusion. The reasons may be partially political, but could be technical in nature as well: with 560 horsepower driving all four wheels, the new 911 Turbo S runs the 0-60 in less than three seconds. Give it more power but less traction, as Porsche has done with past GT2s, and you may not end up seeing an actual improvement in performance. A GT2 that's slower than the Turbo S would be difficult to explain.

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.