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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.

2015 Chevrolet Colorado GearOn Edition is ready to do that outdoorsy thing

Bikes, skis, kayaks... the Chevrolet Colorado GearOn is ready to accommodate all of them, thanks to a trip to the Bowtie's accessories catalog. The special edition Colorado features the basics of Chevy's GearOn accessories, including a bars package, bed divider and tie-down rings, which can be supplemented with other accessories to haul all manner of outdoor equipment. Beyond that, though, Chevy has fitted a few other items to lift up the Colorado's styling, including gloss-black 18-inch wheels, black Bowtie emblems, a body-color grille, off-road assist steps and front foglights. It's a tidy little update to the compact truck's still-fresh styling. Check it out in our full gallery of live images, direct from the Chicago Auto Show. Related Video: Featured Gallery 2015 Chevrolet Colorado GearOn Edition: Chicago 2015 View 14 Photos Related Gallery Chevrolet Colorado GearOn Special Edition Image Credit: Live photos copyright 2015 Drew Phillips / AOL Aftermarket Chicago Auto Show Chevrolet Truck Videos Chicago

Driving the 2021 Chevy Tahoe and big news from Hyundai | Autoblog Podcast #640

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. They discuss some of the big trucks Joel drove: the 2021 Chevy Tahoe and a Mil-Spec-modified Ford F-150. After that is a look at the latest car news including Trofeo versions of Maserati's sedans, Hyundai's new electric brand called Ioniq, and the BMW M3 Touring station wagon and Hyundai Elantra N-Line. They wrap things up with some musings on anniversary of the 19th Amendment to the Constitution and how cars played a role in it. Autoblog Podcast #640 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Reviews2021 Chevy Tahoe Mil-Spec Ford F-150 Maserati Ghibli and Quattroporte Trofeo models revealed Ioniq becomes EV brand for Hyundai 2021 Hyundai Elantra N Line revealed BMW finally announces an M3 station wagon The 19th Amendment and how cars fit in Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Government/Legal Green Podcasts BMW Chevrolet Ford Hyundai Maserati