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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.

VW ID. Buzz revealed, electric Chevy Blazer SS teased | Autoblog Podcast #720

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder. The Volkswagen Bus revival is the big news this week, but first, we discuss winter driving in our long-term Hyundai Palisade, and review the Hyundai Kona Electric and Jaguar F-Pace SVR. Then they dive into the reveal of the VW ID. Buzz, and Chevy's tease of the Blazer SS performance EV. John's been compiling lists of the most efficient EVs, plug-in hybrids and plug-free vehicles of 2022. Finally, they take to the mailbag to help a listener pick a suitable replacement for a 2010 Mazdaspeed3. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #720 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving Winter driving in our long-term Hyundai Palisade 2022 Hyundai Kona Electric 2022 Jaguar F-Pace SVR 2025 VW ID. Buzz revealed 2024 Blazer SS will be Chevy's first electric performance model The most efficient cars of 2022 Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video:

Chevy donates first 2015 COPO Camaro for wounded vets

Want to get your hands on a new COPO Camaro? Only 69 will be made this year before it's phased out ahead of the next Camaro's arrival. And the very first one will be auctioned off this weekend in Palm Beach. That's where Barrett-Jackson will be selling the hand-built drag-racer with the serial number 2015COPO001. The vehicle is being donated by Chevy, with 100 percent of the proceeds benefiting the Achilles Freedom Team of Wounded Veterans, a charitable organization that helps disabled athletes, especially veterans of the armed services. Introduced last fall at SEMA, the 2015 COPO Camaro is built specifically for drag racing with a 350-cubic-inch LSX racing engine with a 2.9-liter Whipple supercharger. It's got 555 horsepower, a three-speed automatic transmission (it's a drag machine, not a circuit racer after all), all the requisite safety equipment, special suspension setup, unique livery and a quarter-mile time in the mid-eights. Look for this unique example to cross the auction block at around 5 PM on Friday, April 18, when we hope it will raise a princely sum for a good cause. 2015 COPO Camaro No. 1 Sale to Benefit Disabled Veterans Top bid from Barrett-Jackson goes to Achilles Freedom Team of Wounded Veterans DETROIT – Chevrolet is selling the first 2015 COPO Camaro race car to raise money for Achilles Freedom Team of Wounded Veterans, which helps wounded veterans participate in marathons and share their success within a supportive community including their families. The hand-built car carries serial number 2015COPO001. It will be sold on Saturday, April 18, at the Barrett-Jackson Palm Beach auction, with 100 percent of the winning bid going to Achilles Freedom Team of Wounded Veterans, a non-profit organization that helps disabled athletes, including veterans, gain access to races, equipment, and training dedicated to improve their physical abilities. "This sale gives the highest bidder the opportunity to buy the first of only 69 factory-assembled 2015 COPO Camaro race cars, the final year of the fifth-generation Camaro," said Jim Campbell, U.S. vice president of Performance Vehicles and Motorsports. "Chevrolet is excited to offer this milestone Camaro to help a very worthy organization." Chevrolet introduced 2015 COPO Camaro No. 001 last fall at the SEMA Show in Las Vegas, and it has been featured in Chevrolet Performance advertising and other marketing initiatives.