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All-new 2019 Cadillac XT4 crossover debuts in New York

Cadillac spent years and years improving its mainline sedans, the CTS and ATS, turning them into awfully good impressions of BMWs from a few years before. The thing is, great sedans aren't selling, and crossovers sure are. Cadillac's XT5 is the only crossover in the lineup, something that's had American Cadillac dealers gnashing their teeth and wailing — although anyone they can upsell into an Escalade can staunch the bleeding. That brings us to the new XT4, which is smaller than the XT5 but even sharper than its bigger sibling. Let's take a closer look at this new two-row luxury crossover. For one, it's based on what Cadillac calls a unique platform. That may be true, technically, although it's likely related to the Equinox/Terrain on some level. Platforms are becoming quite flexible: Look at Volkswagen's MQB, under everything from Euro hatches smaller than our Golf to the three-row Atlas. Whatever else it is underneath the skin, all XT4s will share one powertrain: the corporate 2.0-liter turbocharged inline-four, paired to a nine-speed automatic transmission. View 14 Photos The engine puts out a healthy 237 horsepower and 258 pound-feet of torque, putting it just a hair underneath its closest domestic rival, the Lincoln MKC with the 2.0-liter EcoBoost. Of course, the 2.3-liter MKC beats the XT4 handily, but that's another story. Power is produced with the help of a twin-scroll turbocharger. All-wheel drive is available, with a driver-selectable rear axle disconnect to save a small amount of rolling friction. Cadillac estimates it'll be good for 30 MPG on the freeway, but we haven't seen official results to confirm that. A few other changes that'll affect driving: electro-hydraulic brake assist, a first for Cadillac and mainly a fuel-saving measure; and Continuous Damping Control, which alters the damper's valve continuously based on a number of parameters. It's almost certainly used here because it's lighter and less expensive than air suspension or MagneRide, and it is optional on XT4. CDC or no, all XT4s utilize a front strut and five-link rear suspension. All XT4s also ride on 18-inch wheels in various designs. The trim strategy is mildly interesting. The base model is the Luxury, and then you can choose a Sport (black exterior trim, unique wheels) or a Premium Luxury (bright trim and satin-brushed accents). The interior options are suitably upscale and premium, and we'll have more to say about them a little later when we can see this car up close.

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.

Combine a self-driving car with V2V, and here's what happens

Transportation engineers have started laying the groundwork for a traffic world in which cars communicate with other cars and infrastructure like bridges and traffic lights. How about an environment in which cars talk to pretty much everything and everyone? In a preview of its offerings at the upcoming Consumer Electronics Show, Delphi Automotive will deploy just such a concept. Engineers have designed a system that communicates with traffic signals, street signs, pedestrians, cyclists, even to fry pits and parking garages along a driver's route. To date, engineers and researchers across the auto industry have focused on the technical and safety-oriented foundation of future vehicle-to-vehicle communications, which could help cars share information about everything from traffic tie-ups to upcoming road hazards. Beyond those building blocks, many have projected that V2V could also include more consumer-focused features. Delphi's system, dubbed V2Everything, might be the first that combines those sorts of features in a tangible package. At CES in Las Vegas, scheduled to begin the first week of January, company officials say they'll demonstrate in real-world conditions how V2V technology can be used in an autonomous vehicle to provide a range of critical safety information and leisure and convenience options for riders. The first V2V technology installed on a production car is slated to appear on the 2017 Cadillac CTS. "We imagine a world with zero traffic accidents," said Jeff Owens, Delphi's chief technology officer. "To get there, we will need a convergence of active safety, sensor fusion, connectivity platforms and advanced software." Such software might allow a vehicle to start searching for and reserving parking spots at a programmed destination long before arriving. It could allow riders to place their McDonald's drive-through order from the road and have the food ready for pickup along the route. For the drive itself, the Delphi-equipped car can stay updated on the status of traffic lights around Las Vegas, and can anticipate yellow and red lights. Using smart-phone technology, the car can detect pedestrians and cyclists that may otherwise be hard to see. It can send messages to friends or family to notify them of a driver's location. Some of those features have been available on third-party apps or individually developed by automakers. But this system marries them together in a single system that is tailored for use in self-driving cars.