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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.

Chevrolet considering midsize crossover to slot between Traverse and Equinox

Crossovers are the new hotness, and automakers are looking to cash in by offering a size and shape for every customer. With Chevrolet's debut of the new 2018 Traverse in Detroit, which grew ever so slightly compared to the first-generation model, there is now a midsize-crossover-sized hole between the three-row Traverse and the compact Equinox. When asked about that obvious space, a Chevrolet spokesperson told us the company is looking into the possibility of expanding its crossover lineup. It should be a relatively simple thing to do, since all it would take is reskinning and rechristening the GMC Acadia with a bow tie, and we all know how much GM loves platform sharing. Although they're now different sizes, the new Acadia and Traverse still use the same platform; the Acadia is now on a short-wheelbase version of the C1XX while the Traverse uses long-wheelbase C1XX parts. A short-wheelbase Chevy built on the C1XX likely would be differentiated visually from both the Acadia and the larger Traverse. It may seem like flooding the lineup with more and more models would cannibalize sales of existing ones, but Chevrolet said it would rather have customers stay within the brand rather than going to another automaker. There have been whispers that some form of the Blazer name (possibly TrailBlazer) may make a return on a midsizer, but if it does don't expect an old-school body-on-frame SUV like the old one. In the end, if Chevy builds it, customers will come. Related Video:

2014 Chevrolet Corvette Stingray priced from $51,995*

After months of speculation, Chevrolet has finally revealed the official starting price of the 2014 Corvette Stingray. The base MSRP for the 450-horsepower Stingray Coupe will be $51,995, while the Stingray Convertible will go for $56,995 (*both prices include a $995 destination fee). This means that the price increase from 2013 to 2014 is just $1,400 for the coupe and $2,395 for the convertible - pretty modest increases considering the upgrade in specifications. Of course, neither price accounts for the sort of dealer markup that might grace early C7 window stickers, especially since less than a third of all Chevrolet dealers will be allocated Corvette models to sell at the car's launch.
Now, these prices are for the base car, so if you're wondering how much a fully loaded Stingray will run, Chevy has given us a good indication of that as well. The coupe we saw on display at the Detroit Auto Show (shown above), for example, would run $73,360 including options such as the $2,800 Z51 Performance Package, $2,495 competition sport seats and the $1,795 Magnetic Ride Control option - just to name a few. Stepping up to the 3LT trim level that brings a full leather interior will run an extra $8,005 over the base price.
While $20,000 in options may seem like a lot, this "as-tested" price still has the C7 competitively priced against rival coupes like the Porsche 911 and Nissan GT-R. Speaking of price comparisons, Chevrolet also points out that the C7 Stingray Z51 costs $2,200 less than the C6 Grand Sport while delivering better acceleration (0-60 mph in less than four seconds) and improved track performance (including more than 1 g in cornering).