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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.

Audi RS7 prototype is world's sportiest self-driving car [w/video]

Audi may not be the only automaker out there toying with self-driving automobile technology, but it is arguably the fastest of them. A few years back, it raced unleashed a driverless TTS on the Bonneville Salt Flats, then sent it up Pikes Peak and around Thunderhill. But now it's taking things a step further with the vehicle you see here.
This RS7 Sportback has been fitted with steering, brakes, throttle and transmission hooked up to a computer system that combines GPS, high-frequency radio signals and 3D imaging camera to drive the vehicle autonomously not just in slow-paced, stop-and-go traffic, but around the track at the same pace a professional racing driver would push it: full throttle on the straights, full braking before the corner and 1.1-g of cornering force.
As promised, Audi plans to unleash the self-driving RS7 - which it calls "the sportiest piloted driving car in the world" - at Hockenheim next weekend prior to the DTM season finale, where it is anticipated to pull a 2:10 lap time. The next stage will be to set it lose on the Nürburgring Nordschleife, all 154 turns and 13 miles of it, which ought to pose a heck of a challenge to the engineers from Ingolstadt. In the meantime you can scope it out in the high-res image gallery above and the second teaser video below.

Audi TT most likely to breed crossover derivative

Audi has been rolling out successive concepts based on the new TT. Aside from the production coupe and convertible, we've seen the Shooting Brake concept in Detroit, the Offroad concept in Beijing and, most recently, the Sportback concept in Paris. The clear message is that Audi plans on actually producing more derivatives of its stylish two-door, but the question is which one will come first?
Speaking with Britain's Car magazine in Paris this past week, Audi technical chief Ulrich Hackenberg indicated that, while the decision has still yet to be made, the crossover is the most likely candidate.
Producing the TT Offroad concept - or something like it - would give Ingolstadt another addition to its growing crossover lineup that already includes the Q3, Q5 and Q7. Whether this would come in addition to or instead of the rumored Q1 and Q4 models remains to be seen, but crossovers have become increasingly popular and profitable for German automakers like Audi.