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IIHS: High numbers of drivers treat partially automated cars as fully self-driving

WASHINGTON — Drivers using advanced driver assistance systems like Tesla Autopilot or General Motors Super Cruise often treat their vehicles as fully self-driving despite warnings, a new study has found. The Insurance Institute for Highway Safety (IIHS), an industry funded group that prods automakers to make safer vehicles, said on Tuesday a survey found regular users of Super Cruise, Nissan/Infiniti ProPILOT Assist and Tesla Autopilot "said they were more likely to perform non-driving-related activities like eating or texting while using their partial automation systems than while driving unassisted." The IIHS study of 600 active users found 53% of Super Cruise, 42% of Autopilot and 12% of ProPILOT Assist owners "said that they were comfortable treating their vehicles as fully self-driving." About 40% of users of Autopilot and Super Cruise — two systems with lockout features for failing to pay attention — reported systems had at some point switched off while they were driving and would not reactivate. "The big-picture message here is that the early adopters of these systems still have a poor understanding of the technologyÂ’s limits," said IIHS President David Harkey. The study comes as the National Highway Traffic Safety Administration (NHTSA) is scrutinizing Autopilot crashes. Since 2016, the NHTSA has opened 37 special investigations involving 18 deaths in crashes involving Tesla vehicles and where systems like Autopilot were suspected of use. Tesla did not respond to requests for comment. Tesla says Autopilot does not make vehicles autonomous and is intended for use with a fully attentive driver who is prepared to take over. GM, which in August said owners could use Super Cruise on 400,000 miles (643,740 km) of North American roads and plans to offer Super Cruise on 22 models by the end of 2023, did not immediately comment. IIHS said advertisements for Super Cruise focus on hands-free capabilities while Autopilot evokes the name used in passenger airplanes and "implies TeslaÂ’s system is more capable than it really is." IIHS in contrast noted ProPILOT Assist "suggests that itÂ’s an assistance feature, rather than a replacement for the driver." NHTSA and automakers say none of the systems make vehicles autonomous. Nissan said its name "is clearly communicating ProPILOT Assist as a system to aid the driver, and it requires hands-on operation.

Best cars for snow and ice in 2023 and 2024

What's the best car for snow? The real answer is "the one with winter tires." What do we mean by that? You could have the finest, most advanced all-wheel-drive system or four-wheel drive in the world, but if you're running all-seasons (the spork of tires), your fancy four-wheeler won't matter much. The odds are, any vehicle on the road running good winter tires will probably perform adequately in slippery, slushy and/or snowy road conditions. (Here's a more complete explanation of why winter tires are totally worth it). In other words, you don't really need any of the cars on this list. With a set of winter tires, countless others will do the job, and even these will be at their best with proper rubber. You can find a variety of winter tires for your car here at Tire Rack. Keep in mind that you will need a full set of four snow tires for safety and performance, no matter what you're driving. The days of your dad putting just two snows on the family truckster to get it moving in a straight line are long gone. Don't get us wrong, getting a car that performs well in snow and ice is still a worthy criteria for car buyers. According to the U.S. Transportation Department, 70% of Americans live in places that get snow and ice. And much of the country has been blasted with arctic air for much of the new year. So let's look at the cars. First, we're highlighting choices for a variety of buyers and price points. Second, we're not just considering snow; we're considering general wintery conditions people will experience driving to work or school. As such, these are all choices with advanced all-wheel-drive systems, usually with "torque-vectoring" systems that not only automatically shunt power front and back, but side to side between the rear axles. Most have extra ground clearance for getting through deep snow, and we prefer those vehicles with more responsive steering, throttles and transmissions that provide a greater sense of vehicle control in slippery conditions.    Acura RDX Read our Acura RDX Review Acura's Super-Handling All-Wheel Drive system was one of the first to offer torque-vectoring, and besides often being touted for its ability to greatly enhanced dry-road handling, its benefits in the slick stuff can be profound. It's actually surprising that Acura hasn't leaned into this capability further by offering more rugged versions of its vehicles.

GM exploring ways to raise half-ton Duramax diesel tow rating

Lots of truck owners cheered when GM announced fuel economy numbers for the 2020 Chevrolet Silverado with the 3.0-liter Duramax diesel inline-six. Even after Ram let loose its EPA mileage ratings for the 2020 Ram 1500 EcoDiesel, the Chevy oil-burner still took the trophy. The victory was years in the making, GM engineers spending an entire four-year development cycle refining the LM2 Duramax to increase mileage. The tradeoff, as well all know by now, is towing; the Duramax in half-ton duty pulls a maximum 9,300 pounds in the Silverado. Rivals across town can do more, the Ford F-150 PowerStroke rated at 11,500, the Ram 1500 EcoDiesel game to pull 12,560. GM engineer John Barta told Muscle Cars & Trucks that more hauling chops could be on the way, explaining, "We’re actually looking at upgrading some of the materials around (the engine bay) to see if we can maybe raise our tow rating." Engine bay materials are at issue due to thermal complexities underhood. John Barta, GM's assistant chief engineer of diesel engine controls, said the Duramax's inline-six configuration allowed engineers to get emissions hardware like the combined selective catalytic reduction, diesel oxidation catalysts, and diesel particulate filter unit closer to the engine, where it heats up quicker, getting emissions down quicker. But that filter puts another heat source in those confines, enforcing a cap on the tow rating to keep the engine and other systems from overheating. "If you look under the hood," he said, "youÂ’ll see a significant amount of silver ‘moon tapeÂ’ around to make sure things arenÂ’t getting overheatedÂ… if we were to go up in higher towing, which we can, we start impacting the possibility of deteriorating some of the components.” There isn't much space for more grille, so swapping for a better grade of "moon tape" or a different kind of material could reduce engine bay heat, extracting a higher tow rating in the process.  It's important to note a point Barta's been making for months about the Duramax figures, though. "Even though itÂ’s nice to brag about big numbers, in reality, light duty customers are not towing that large with their trucks," and, "We do know that (95 percent) of our light duty customers donÂ’t tow over 9,000 pounds." On our First Drive of the 2020 Silverado diesel we called out the tow rating, but emphasized that the Chevy and GMC have more important challenges to overcome.