1955 Dodge Custom Royal Lancer Hemi. Southern California Car! 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.

2015 Dodge Charger darts into NY traffic

Meet the refreshed 2015 Dodge Charger; notice anything different? You would have to be pretty farsighted to miss the sedan's new Dart-like nose, and it's likely going to be quite polarizing to the car's fans. Gone are the previous furrowed, aggressive headlights in favor of a wider, friendlier look.
While the more rounded headlights and narrower grille are going to be the first thing most people notice, Dodge claims its designers have made changes to nearly every panel on the Charger. The hood dips down deeper at the front, and the doors show off a more angled version of the car's shoulder blister. LED running lights and taillights are standard on all models, and SXT and RT trims get LED foglights. Even though the front might not be as intimidating, Dodge has hung onto the sedan's muscular stance with angular contours making up the rest of the redesign.
Under the hood is the same engine range you've come to know over recent years. Both the 5.7-liter V8 and the 3.6-liter V6 return for 2015, with the Hemi making 370 horsepower and 395 pound-feet of torque, and the standard Pentestar outputting 292 hp and 260 lb-ft. All models are now equipped with Chrysler's TorqueFlight eight-speed automatic as standard. Fuel economy for V8 Chargers is predicted at 16 miles per gallon city and 25 mpg highway, compared to 15 mpg / 25 mpg last year with a five-speed automatic. All models also come with electric power steering, and the axles are cast from aluminum to save weight.

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"