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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.

Driving McLaren's Sports Car and 'The Best Corvette' at the M1 Concourse | AutoblogVR

There's nothing better than a track day. Great cars on a great track are always great fun. Recently, we had the opportunity to check out the new M1 Concourse in Pontiac, MI, with two of the coolest cars in the game; a McLaren 570S and a Corvette Grand Sport. Driving the 570S was Autoblog senior editor Greg Migliore, and he didn't hold back. Getting behind the wheel of the McLaren, Greg explains that although this is McLaren's idea of a sports car, "it's all relative." Topping out at 204 miles per hour with 562 horsepower, there's no two ways about it: this thing is a monster. While the 570S was fantastic, we had another sports car we wanted to drive and editor-in-chief Mike Austin was just the man for the job. Enter the Corvette Grand Sport. Mike pushed all 460 horses of the 'Vette to the limit and came away impressed with the car, even calling it "the best Corvette." Comparing it to its more powerful sibling, the Z06, Mike goes so far as to say the Z06 has too much power, while the Grand Sport seems to be the third bear's bowl of porridge in the Corvette family... It's just right. We captured all the action of the day with 360° cameras so you can feel like you're right there in the car sitting shotgun with us! You can check out the McLaren and Corvette laps above, but the best way to view them is through the AutoblogVR app, where you can watch the videos on your VR headset or in a nice swivel-y office chair so you can take in the sights all around you. Each month, new episodes will launch on the AutoblogVR App. We'll be posting them here on Autoblog, but for the best experience, head over to the app, which you can download for free from the App store and Google Play. Be sure to try it with a cardboard viewer, too!

The Volt Dance had precedent; meet the Chevy Footlockers

Marketing in the auto industry can get weird sometimes – really quite bizarre, in fact. For example, remember the Chevy Volt dance from the 2009 Los Angles Auto Show? If not, a group boogied to a song about the electric car, and it was every bit as awkward (and hilarious) as that sounds. In fact, that innocent bit of promotion lives in infamy, as some pundits grabbed hold of it during General Motors' bailout and asked why America's tax dollars were going to such things. The Chicago Auto Show has been digging through its vault of vintage videos, and it has come up with something that might actually be worse than that Volt-themed routine. They're called the Chevy Footlockers, and they're a dance troupe somehow promoting the Cavalier at the 1988 Chicago show. The connection between the car and their routine is unclear, but it's gloriously cheesy in a Chippendales-meets-AC Slater sort of way. Also, there are props towards the end, but we aren't going to spoil them for you, because you just have to watch for yourself. As a bonus, there's another (brief) clip below showing a female dance group with the Geo Tracker at the '91 Chicago show, and they sing, too. Scroll down to watch both of these oddities. News Source: ChicagoAutoShow via YouTube [1], [2] Marketing/Advertising Chicago Auto Show Chevrolet GM Classics geo