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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 Chevy Colorado gets its GearOn before Chicago

Complementing the Chevrolet Silverado Midnight Edition at the 2015 Chicago Auto Show is this, the 2015 Colorado GearOn Edition, which as the name might suggest, takes full advantage of the company's truck accessory catalog. Available on the volume LT trim and in both crew and extended cab varieties and with both the short and long-bed options, the GearOn Edition adds plenty of nifty extras designed to increase the truck's versatility and help accommodate bikes, kayaks and other outdoorsy items. The GearOn bars package, divider package and tie-down rings are supplemented an "EZ" lift and lower tailgate, side steps, gloss black 18-inch wheels, a body color grille, and blacked-out Chevy badges. And although it's not specifically called out in the attached press release, the paint on this special edition looks different than anything else in the truck's catalog. We dig it, especially with the black accents. Prices, meanwhile, start at $31,250, which is not even $1,200 more than a Colorado Extended Cab LT 4x4. We'll have more on the Colorado GearOn when it makes its debut later this week at the 2015 Chicago Auto Show, including live images to add to the pair of stocks distributed by Chevy. Until then, scroll down for the press release on the limited-edition truck. Chevy Colorado GearOn™ Edition Brings More Adventure Versatile accessories package maximizes cargo capability; enables more fun DETROIT – Chevrolet today introduced the 2015 Colorado GearOn™ Special Edition, which blends the capability of the all-new midsize pickup truck with the versatility of the GearOn accessory system – and additional popular features. It makes its public debut Feb. 13-22 at the Chicago Auto Show. The Colorado GearOn Special Edition goes on sale this spring with a starting price of $31,250. It's offered on LT models in extended or crew cab configurations, with the long or short cargo bed and available 4WD. "Chevrolet Colorado answers the call for customers who have passions of all types and the GearOn accessory system enables them to bring more adventure wherever they go," said Tony Johnson, Colorado marketing manager. "And with Colorado offering segment-leading efficiency and capabilities, it's a combination that maximizes adventure without compromise." The GearOn accessory system is designed for easy configuration with a multitude of mounting accessories for everything from bikes, kayaks, skis and stand-up paddle boards to a bed-mounted tent.

General Motors and EVs: No stranger to firsts, but where's the leadership?

2015 is already shaping up to be the year of "affordable, 200-mile EV" concepts. Nissan and Tesla have each been talking about them for some time, the latter promising to unveil its Model 3 at the North American International Auto Show in January before balking when the time came. Instead, Chevrolet beat them all by unveiling the Bolt concept at the same event, followed shortly thereafter with suggestions of a 2016 launch – potentially offering the first nationwide EV with anything close to that range. It was the ballsiest EV-related move General Motors has made in a quarter century. But will it remain so? Exactly 25 years before the Bolt rolled up onto the turntable, then-Chairman Roger Smith unveiled GM's last ground-up EV concept, the even-more-unfortunately-named Impact, at the Los Angeles Auto Show in January 1990. A few months later, he surprised most of his colleagues by announcing its intended production in honor of Earth Day. It was the first modern foray into electric vehicles for the US by any automaker, one that was rewarded by the State of California with what is now known as the Zero Emissions Vehicle mandate. The program not only forced other automakers into competing with Roger's pet project, but inspired all of them to fight it like small children against bedtime. Some years later, the drivers themselves weighed in, with a biting documentary about that obstinance and the leadership it cost both GM and the country. Within months, GM was first back into the fray of plug-in vehicles. Many criticized the company for starting with a PHEV rather than jump straight back into EVs. The choice wasn't totally out of the blue – even EV1 was meant to be followed by a PHEV. And especially on the heels of Who Killed the Electric Car?, some skittishness was understandable: even a successful EV would invite a "we told you so" public reaction, underscoring their mistake in ending the EV1 program. If a new EV didn't do well, they'd be convicted in the public eye as serial killers. All while seeking a federal bailout. For all the flak, the resulting Chevy Volt was and is a better car than GM has ever gotten credit for. But the company seemed to grow weary of having to overcome its varied past, and while the current owners remain happy, much of the stakeholder and community engagement that so effectively built early goodwill and sales growth faded not long after launch. Marketing has been spotty in both consistency and effectiveness.