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How GM engineers are using diaper 'snow' to keep you warm

Testing how snow affects General Motors' vehicles isn't really a problem right now for the company's engineers, but in the dog days of summer the process isn't exactly easy. The only real option is for them to book time at the automaker's climatic wind tunnel. However, a flash of brilliance from an engineer allows snow to be simulated regardless of the temperature outside, and the discovery is all because of his daughter's wet diaper. The realization came to GM Thermal Systems engineer Nicholas Jahn while he was swimming with his daughter and noticed how her diaper ballooned in size in the water. He found out the substance that makes this possible is called sodium polyacrylate. When the material gets wet it grows and forms fluffy flakes that are a close imitation of snow. Best of all, the stuff can be prepared easily any time of the year, and it's reusable. The engineering team uses the material to test the effectiveness of the heating systems of GM's vehicles. They spread the sodium polyacrylate over the inlets at the base of the windshield to obstruct the airflow and then crank the heater. After some time, they can see how much is being sucked into the system and design more efficient systems in the future. See how the process works in the video above and read about the diaper discovery in GM's press release below. Diapers Change Chevy Cruze Winter Warm-up Time GM validation engineer uses diaper material "snow" to reduce frigid drives 2015-01-06 DETROIT – An item commonly found on an infant's changing table is helping General Motors' engineers simulate snow year round, ensuring heating systems in cars like the 2015 Chevrolet Cruze can quickly and efficiently warm its interior. Packed snow can prevent air from entering the inlet panel at the bottom of the windshield, obstructing the flow of air into the heating system and reducing the amount of air it can push out. This can lead to less efficient warming of the car's interior and windshield defrosting. "The last thing anyone wants to do when it's freezing cold out is scrape their windshield," said Nicholas Jahn, GM Vehicle Thermal Systems engineer. "The testing we perform on the Chevrolet Cruze with the diaper material allows us to maximize the car's heating capabilities." Ironically, Jahn stumbled upon his diaper-based testing method in the middle of summer. During a swim with his daughter, he noticed her diaper multiplied in size when it came into contact with water.

Sunday Drive: A tale of old favorites and upcoming challengers

Sedans and crossovers dominated the attention of our readers last week, led by the completely redesigned 2018 Honda Accord. It's the Japanese automaker's flagship, and people are seriously interested in finding out how good the latest Accord is. So interested, in fact, that no other single story came close to the brand-new Accord in Autoblog reader interest. Moving down the list we find the equally new 2018 Buick Enclave. The three-row crossover has a lot to offer a family, especially one looking for a nice, quiet ride. If you're looking for the exact opposite of nice and quiet, but still want enough room for you and your significant others, the Subaru WRX that we tested last week may be the perfect ride for you. Or, if you just want to drive fast and aren't at all worried about space, there's the Camaro SS. See? We offer something for everybody. From there, we look to the future. Who isn't interested in seeing the first fully electric vehicle from Porsche? And who isn't intrigued to see the Mission E testing alongside a gaggle of Teslas? A brand-new Jeep is always a big deal, especially when it's the revival of a classic nameplate like the Grand Wagoneer. And finally, we have something completely different: the Rezvani Tank. As always, tune in to Autoblog next week for a front-row seat to all the happenings worth following in the automotive industry. 2018 Honda Accord First Drive | Feels like home again 2018 Buick Enclave First Drive Review | Fortress of quietude 2018 Subaru WRX Drivers' Notes | Turbo traditionalist 2018 Chevy Camaro SS Drivers' Notes | Demonstrative power, middling interior Porsche Mission E caught testing against Teslas Jeep three-row SUV caught on public roads — Grand Wagoneer, perhaps? Rezvani Tank: It's like a Hot Wheels car brought to life Green Buick Chevrolet Honda Jeep Porsche Subaru Crossover SUV Electric Future Vehicles Luxury Off-Road Vehicles Special and Limited Editions Performance Sedan porsche mission e sunday drive

Mary Barra reportedly confirms GM's electric pickup truck plans

According to Motor Authority, CEO Mary Barra confirmed General Motors' intentions to build an electric pickup truck this week. Whether or not it would be an all-new vehicle is unknown. The news comes not even a week after Ford announced a $500 million investment in electric-vehicle startup Rivian. First, electric powertrains were integrated into cars. Then came the crossovers and the SUVs. Naturally, then, the next wave will be pickup trucks. Ford is set to produce an electric F-150, Rivian has the R1T, and now General Motors has reportedly confirmed its plans to introduce a competitor into the field. The article says the topic was brought up in a recent investor call as part of a brief overview of the automaker's electrification strategy. That's where the details end, however, as there is no indication of a timeline, what GM brand would carry the truck, or whether it would be an entirely new product or an adaptation of a current model. The latter seems most likely, which points to the Chevrolet Silverado or the GMC Sierra as possibilities. Chevrolet has been GM's electrification leader this decade with the Bolt and Volt, so an electric Silverado would align well with that messaging and branding. However, an electric pickup would likely be a pricier premium product, which could align it better with GMC. Autoblog has reached out to GM for comment and will update this space when we get a response. Green Rumormill Chevrolet GMC Truck Electric Future Vehicles Mary Barra electric truck chevrolet silverado