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MIT puts V2V technology on its 2015 Top Ten list

Of all the technologies swimming around the automotive world, it is vehicle-to-vehicle communication that the Massachusetts Institute of Technology has fished out as one of its Ten Breakthrough Technologies of 2015. It joined emerging tech like brain organoids, supercharged photosynthesis, and Project Loon on the list, and got the nod over autonomous driving because, as the MIT Technology Review wrote, V2V communication "is likely to have a far bigger and more immediate effect on road safety." How so? Because actual cars transmitting data like their location, speed, steering angle, and state of braking to one another at least ten times per second provides a greater degree of awareness than sensor readings and algorithms. The US Department of Transportation and the National Highway Traffic Safety Administration have been working for years on standards and a regulatory schedule for introducing V2V to the marketplace, and Cadillac plans to incorporate V2V into at least one of its vehicles by 2017. Since we've begun the year with a number of stories of cars being hacked into, that got us wondering about the security of V2V communications. In a recent piece by our own Pete Bigelow on what motorists should know about getting their cars hacked into, he wrote that although cyber break-ins are extremely difficult, expensive, and time-consuming to do remotely, V2V is "one more conceivable avenue a hacker could use to impact multiple cars at a given time." So we spoke to Wilmington, Massachusetts-based Security Innovation about it. The automotive consultancy company has been working with the DOT since 2003 on V2V technology and the issues around it - namely security and privacy - and its chief scientist, William Whyte, is the technical editor of the Institute of Electrical and Electronics Engineers (IEEE) 1609.2 standard outlining its security protocols. Those protocols are expected to be finalized by the DOT toward the end of this year and then come into effect in 2016, and the company's Aerolink product is the security solution Cadillac will use. Whyte said, "If you hack into a car, V2V is the hardest place to start," and Pete Samson, the general manager of Security Innovation's automotive team, said "There are ten or 12 alternate attack surfaces" around the car that would make much easier targets.

The biggest gas-guzzlers of 2024: 'The Meanest List' is the opposite of greenest cars

In some circles — especially some automotive circles — bigger is better. This explains the Hummer, for example. In its so-called “Meanest List” of a dozen models, the American Council for an Energy-Efficient Economy (ACEEE) makes no apologies for berating “the worst-performing mass market automobiles” sold in 2024 in the U.S. The most diminutive car on the list is a Chevy Corvette Z06. At the top of this particular heap is the Mercedes-Benz AMG G63, a gas-powered SUV that the environmental agency says was “the worst-performing vehicle of the more than 1,200 models assessed by Greener Cars and has an annual fuel cost over $4,000.” Not to mention its MSRP of around $184,000. Rank Make & Model Powertrain Green Score MSRP Estimated Annual Fuel Cost* 1 Mercedes-Benz AMG G63 Gas 20 $184,000 $4,242 2 Ram 1500 TRX 4x4 Gas 22 $98,335 $3,819 3 Ford F150 Raptor R Gas 24 $79,975 $3,777 4 Cadillac Escalade V Gas 26 $152,295 $3,388 5 Dodge Durango SRT Gas 26 $74,995 $3,332 6 Jeep Wrangler 4dr 4X4 Gas 27 $35,895 $3,260 7 Jeep Grand Wagoneer 4x4 Gas 28 $91,945 $3,058 8 Mercedes-Benz G550 Gas 28 $143,000 $3,186 9 GMC Hummer EV SUV EV 29 $98,845 $1,746 10 GMC Sierra Gas 29 $37,700 $3,069 11 Chevrolet Corvette Z06 Gas 30 $114,395 $3,169 12 Mercedes-Benz Maybach S680 Gas 30 $234,300 $3,031 *ACEEE analysis using EIA data of the annual cost of driving 15,000 miles In terms of numbers, the dirty dozen of the meanest includes seven SUVs and three trucks. Lonely at the middle of the list is the sole electric, the GMC Hummer EV, which weighs in at 9,000 pounds. The council notes that “though EVs have lower emissions than similarly sized gasoline models, the Hummer demonstrates that size and efficiency, not just fuel source, are important factors in a carÂ’s environmental impact.” ItÂ’s also worth reminding prospective buyers that the average fuel cost of a vehicle on the “Greenest List” eats up only a fifth of the fuel cost of a vehicle on the Meanest List, “showing that greener options can also be more affordable.” The ACEEE also put out a "Greener List" of efficient gasoline and hybrid cars that don't require plugging in.  By the Numbers Green Cadillac Chevrolet Dodge Ford GMC Hummer Jeep Maybach Mercedes-Benz RAM Emissions Fuel Efficiency Green Automakers Truck SUV Electric Hybrid

2019 Lincoln Nautilus vs 2018 Cadillac XT5: How they compare on paper

There will no doubt be endless ads touting the "first-ever" 2019 Lincoln Nautilus, which is accurate, but it's really just a mid-cycle update of an existing midsize luxury SUV attached to a greatly welcomed name change. Frankly, Lincoln could've called it the Diamond Jubilee Bill Blass and it would've been an improvement. Whatever. The MKX is dead. Long live the Nautilus. Now, speaking of SUVs with silly alphanumeric names, the 2018 Cadillac XT5 lines up remarkably well with the 2018 MKX. Besides hailing from American luxury brands, they have virtually identical exterior dimensions and similar standard engines as well. Cross-shopping seems assured. But what does the change to the 2019 Nautilus mean for how it compares to the XT5? Cosmetic changes might tweak exterior dimensions by a tenth of an inch here or there, but the interior should remain the same. The Nautilus gets a new engine, though, so check out our spreadsheet below to see if America's (and Canada's) luxury SUVs still stack up. Conclusions The switch to a turbocharged four-cylinder base engine means the XT5 and MKX/Nautilus are no longer on equal terms under the hood. While the Cadillac now has a considerable power advantage, the Lincoln Nautilus could save you hundreds every year based on its likely fuel economy (the 2.0-liter turbo engine, albeit with a different transmission, is in the mechanically similar Ford Edge). Besides the new engine for 2019, the Nautilus also gains an eight-speed automatic and an automatic stop start system. Both of those elements are already included on the XT5. It was announced that the 2019 Nautilus will start at $41,335, which compares to the base MKX at $39,960 and the 2018 Cadillac XT5 at $41,590. In other words, the Lincoln is still less expensive, but just barely. Standard feature content is also comparable, especially as the Nautilus gains standard Apple CarPlay and Android Auto, which are already standard on the XT5. So really, no matter what they're called, the Cadillac and Lincoln should continue to be neck-and-neck competitors. 2019 Lincoln Nautilus Photos View 20 Photos 2018 Cadillac XT5 Photos View 28 Photos 2018 Lincoln MKX Photos View 57 Photos Related Video: Cadillac Lincoln Car Buying Crossover SUV Luxury Comparison consumer cadillac xt5 lincoln nautilus