2011 Porsche Panamera 4 on 2040-cars

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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.

eBay Find of the Day: 1981 Porsche 928 convertible by Carelli

The Porsche 928 was perhaps the consummate European GT of its day. With a powerful front-mounted V8 engine that grew in displacement as the model years went on, it was capable of eating up the miles at triple-digit speeds in great comfort for occupants. It was also an unusual beauty, with its sharp front and curved rear featuring innovative integrated bumpers.
Currently for auction on eBay Motors is one of the rarest 928s you're likely to find, in a handsome combination of Guards Red paint and tan leather interior, though we wouldn't mind a less-showy finish to the factory wheels. According to the seller, this car is one of eight 928 convertibles by Carelli Design, a firm that's still in business.
The auction claims that these cars were made in 1981 as a feasibility study between Carelli and Porsche for a possible production 928 convertible. The seller says he worked at the dealership where the car is said to have been originally sold $103,000. To remove the roof and hide the convertible top, there were significant changes made to the body and interior, including redesigned doors and a completely new trunk. As you can see in the gallery, when down, the top is completely hidden in a very factory-like fashion. When up, it looks slightly awkward, though (and we'd really like to see a rear three-quarter view to check out the blind spots).

Porsche reveals new 911 Turbo Cabriolets, starting from $160,700*

Porsche has come a long way from the days when its entire model line revolved essentially around the 911, but its prototypical rear-engined sports car is still what it's known for best, and still keeps the German automaker pretty busy. With a seemingly endless array of variations on the theme, the 911s just keep on coming until a new generation arrives and then it starts all over again. And what we have here is the new king of the hill (for now, anyway).
Set to debut at the Los Angeles Auto Show a little less than two months from now are the new Porsche 911 Turbo Cabriolets. And no, that's not a typo: that's cabriolets, plural, because what you're looking at are two new models. First up is the 911 Turbo Cabriolet, whose 3.8-liter twin-turbo flat-six develops 520 horsepower, driving the droptop to 60 miles per hour in 3.3 seconds. That's Porsche's claim, and we have a feeling it's a bit conservative. But if that's still not enough, the 911 Turbo S Cabriolet adds an extra 40 hp for a total of 560 to drop the benchmark acceleration run down to 3.1 seconds.
That makes the new topless Turbos 30 horses stronger and 0.2 seconds quicker than the respective models they replace, but the weight penalty involved with replacing a fixed roof with a folding one (and the necessary structural reinforcement) does make the new 911 Turbo Cabs a smidgen more lethargic than their contemporary coupe counterparts, which run the gauntlet in 3.2 and 2.9 seconds in standard Turbo and upgraded Turbo S specs, respectively. They only lose a single tick on the top speed, though, which clocks in at a follicle-tickling 195 mph in either spec. Otherwise the specifications are as identical as you might expect.