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Volvo's SuperTruck 2 looks ready to extend a ramp for K.I.T.T.

In 2009, the U.S. Department of Energy (DOE) entered a public-private partnership with willing Class 8 truck makers, the goal of the partnership to dramatically improve the freight efficiency of over-the-road (OTR) trucks. The term "freight efficiency" refers to freight-ton efficiency, a different metric than miles per gallon because it takes into account the weight of the truck; a lighter tractor-trailer can carry more weight before reaching the 80,000-pound legal maximum on most U.S. highways. Volvo, Daimler (which owns the Freightliner and Sterling brands), Navistar (International), and Peterbilt signed on the the partnership to develop what's being called a SuperTruck. Volvo, Daimler, and International make their own engines, Peterbilt teamed up with Cummins, and all four found their own trailer manufacturers to work with. Those four makers debuted their first iterations of what's being dubbed SuperTrucks about six years ago. This year has been all about SuperTruck 2, Volvo the last of the quartet to show what it's achieved. The goal for SuperTruck 1 was to achieve a 50% increase in freight efficiency compared to a 2009 baseline, the baseline in Volvo's case being a 2009 VNL 670 tractor. The goal for SuperTruck 2 was another 50% improvement. Volvo said its internal goal was a 120% betterment compared to 2009, and that it exceeded the mark with a 134% increase. The company said the huge gains came primarily from aerodynamics: A wedge-shaped front with a smaller frontal area thanks to a smaller cooling package; the heavily curved, wraparound windshield; the tractor's adjustable ride height; using camera for side mirrors; and adding a boat tail to the back of the trailer, plus enough fairings and skirts front-to-back to make the tractor and trailer look like a single unit when driving in a straight line. Volvo did make changes to its rolling lab that aren't likely to infiltrate the U.S. market anytime soon. It's common for U.S. OTR trucks to use a 6x4 configuration, with two axles behind the cab, both driven. Volvo's SuperTruck 2 went with a 4x2 setup common in Europe, using a single axle behind the cab, and fitted a composite driveshaft. Combined with making the chassis out of aluminum instead of steel, and trailer partner Wabash providing a lightweight aluminum van, the tractor-trailer combo weighed just 27,000 pounds.

How Norway became a world leader in EV sales, and where it goes from here

OSLO, Norway — A silent revolution has transformed driving in Norway. Eerily quiet vehicles are ubiquitous on the fjord-side roads and mountain passes of this wealthy European nation of 5.3 million. Some 30 percent of all new cars sport plug-in cables rather than gasoline tanks, compared with 2 percent across Europe overall and 1-2 percent in the U.S. As countries around the world — including China, the world's biggest auto market — try to encourage more people to buy electric cars to fight climate change, Norway's success has one key driver: the government. It offered big subsidies and perks that it is now due to phase out, but only so long as electric cars remain attractive to buy compared with traditional ones. "It should always be cheaper to have a zero emissions car than a regular car," says Climate and Environment Minister Ola Elvestuen, who helped push through a commitment to have only zero-emissions cars sold in Norway by 2025. The plan supports Norway's CO2 reduction targets under the 2015 Paris climate accord. To help sales, the Norwegian government waived hefty vehicle import duties and registration and sales taxes for buyers of electric cars. Owners don't have to pay road tolls, and get free use of ferries and bus lanes in congested city centers. These perks are being phased out in 2021, though any road tolls and fees would be limited to half of what gasoline car owners must pay. Gradually, subsidies for electric cars will be replaced by higher taxes on traditional cars. Registration tax on new cars is paid on a sliding scale with a premium for the amount of emissions produced. Elvestuen pledges that the incentives for electric vehicles will be adjusted in such a way that it does not scupper the 2025 target. "What is important is that our aim is not just to give incentives," he says. "It is that we are taxing emissions from regular cars." Using taxes to encourage consumers to shift to cleaner energy can be tricky for a government — protests have erupted in France over a fuel tax that hurt the livelihood of poorer families, especially in rural areas where driving is often the only means of transportation. In the U.S, some would like to see the tax credit on EVs and hybrids eliminated while others would extend it. In this sense, Norway is an outlier. The country is very wealthy after exporting for decades the kind of fossil fuels the world is trying to wean itself off of. Incomes are higher than the rest of Europe, as are prices.

2018 Buick Regal TourX vs. wagon competitors: How it compares on paper

To the great joy of auto enthusiasts nationwide, wagons are back! Well, at least there's a few more of them. The latest is the 2018 Buick Regal TourX, which we just had our first drive of and found to actually be quite good with pleasant handling, solid power and plenty of space. But, how does the TourX compare to other cladded wagons? Well, let's dive into the specs and fire up the ol' spreadsheet maker for Buick Regal TourX vs Subaru Outback vs Audi A4 Allroad vs VW Alltrack vs Volvo V60 Cross Country. True, some are from mainstream brands and others are from luxury marques, but Buick straddles both realms, so it's appropriate to look at them all. Of course, there's more to these cars than just the numbers, but they're still important, and in the case of this class of crossover-aping wagons, can vary more than you'd expect. So check out the specs in the chart below, which are followed by more analysis and photos of each. Discover and compare other wagons and crossovers with our Car Finder and Compare tools. Engines and Transmissions When comparing powertrains, the Buick is far-and-away the winner as far as torque is concerned, and is in a nearly three-way tie for horsepower. Its 295 pound-feet of torque is 22 lb-ft more twist than the next-most-grunty Audi A4 Allroad. And in regards to power, the Buick's 250-horsepower engine is only down 6 hp to the most-powerful Subaru and its optional naturally aspirated flat-six, and just 2 hp less than the Audi. At the bottom of the pack is the Subaru Outback with the standard naturally aspirated flat-four, which only makes 174 hp and 174 lb-ft of torque. That may not seem too bad compared with the VW Golf Alltrack, which only makes 170 hp and 199 lb-ft of torque, but the VW is much lighter by between 200 and 300 pounds. Transmission-wise, there's quite a bit of variation in the group. The Regal TourX and the Volvo V60 Cross Country rely on eight-speed automatics, all Outbacks use CVTs, and the Alltrack and Allroad have dual-clutch automated manual transmissions with six and seven gears, respectively. But for people that want to shift for themselves, the only option is the Volkswagen, which offers a traditional six-speed manual transmission on the Golf Alltrack. Cargo and Interior Space One of the main reasons to buy a wagon is for the body style's large cargo capacity. And for the most space for things and stuff, you'll want to check out the Subaru and the Buick.