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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.

Ford Bronco, Bronco Sport, sub-Ranger pickup and GM EVs | Autoblog Podcast #618

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and Road Test Editor Zac Palmer. Top of the list this week are the leaked photos of the 2021 Ford Bronco and Bronco Sport. Then they talk about the possibility of a small Ford pickup based on the Focus, as well as all the electric vehicles Snyder saw in person at GM's "EV Day." The editors have been driving the Ram Power Wagon and Hyundai Sonata, and Palmer took Autoblog's long-term Subaru Forester to New Orleans. Finally, they help a listener choose a small luxury crossover in this week's "Spend My Money" segment. then, just as they're about to wrap up the show, they learn that the 2020 New York Auto Show has been postponed due to the coronavirus outbreak. Good times. Autoblog Podcast #618 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 2021 Ford Bronco and Bronco Sport leaked photos (and, just as we predicted, more photos) Ford shows its dealers the sub-Ranger pickup More details about everything we saw at GM's "EV Day" Driving the 2020 Ram 2500 Power Wagon Driving the 2020 Hyundai Sonata Driving our long-term 2019 Subaru Outback to New Orleans Spend My Money: Audi Q3, Volvo XC40 or Range Rover Evoque? 2020 New York International Auto Show postponed Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Malcolm Butler gets the MVP's Chevy Colorado

In the wake of the Super Bowl last week, we reported that New England Patriots quarterback Tom Brady intended to give the Chevy Colorado awarded to him as the game's most valuable player to Malcolm Butler instead. In our informal poll (to say nothing of the hundred-plus comments that ensued), an overwhelming 86.7 percent of you, our loyal readers, agreed that it was the right thing to do. And now that's precisely what's happened. "After consulting Super Bowl MVP Tom Brady," the automaker said in the press release below, "Chevrolet presented an all-new Colorado pickup to New England Patriots cornerback Malcolm Butler." The rookie, as you may have seen in between the commercials, made the game-saving interception that handed his team the victory, propelling Butler to stardom. "I am ecstatic that Chevrolet has chosen to reward me with a Colorado," said Butler upon taking delivery of his new red pickup. "It is just another unreal event in what has been an incredible week." We can only imagine. Enjoy the truck, Malcolm; you've earned it. Related Video: Upon Further Review, Chevrolet Awards Super Bowl MVP Colorado to Malcolm Butler 2015-02-10 DETROIT – After consulting Super Bowl MVP Tom Brady, Chevrolet presented an all-new Colorado pickup to New England Patriots cornerback Malcolm Butler, whose end zone interception preserved the Patriots' victory in Super Bowl XLIX. The Colorado was intended to be awarded to Brady, the Patriots' quarterback, in recognition of his Super Bowl Most Valuable Player award. However, Brady and Chevrolet huddled on Monday and Chevrolet determined Butler deserved recognition for his game-saving interception. "I've seen several game-changing moments in big games, and Malcom's interception last Sunday ranks up there as one of the biggest," said Brady. "I appreciate Chevrolet wanting to honor the Super Bowl's top performer, and I'm glad they have agreed to award the Colorado to Malcolm." Said Butler: "I am ecstatic that Chevrolet has chosen to reward me with a Colorado. It is just another unreal event in what has been an incredible week." The Chevrolet Colorado, 2015 Motor Trend Truck of the Year®, was engineered to be the most capable, most versatile and most technologically advanced midsize truck in the market. With class-leading horsepower and fuel economy along with a 4G LTE built-in Wi-Fi hotspot, the Colorado adds a new dimension to the Chevy truck line.