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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.

Veyron and C7 Corvette join cast of Transformers 4

Like the Fast & Furious franchise, the Michael Bay-directed series of Transformers movies has become known as much for its bad acting as its impressive lineup of cars. As filming just started for Transformers 4, Bay's website has confirmed two new cars for the next installment as well as a makeover for everyone's favorite tractor trailer hero, Optimus Prime.
Joining the cast of T4 are a "race-inspired" Chevrolet Corvette Stingray and a Bugatti Veyron Grand Sport Vitesse. While Bay's website did not supply names for either car, Bugatti is reporting on its Facebook page that the Veyron will join the Autobots. Speaking of the good guys, top Autobot Optimus Prime is getting an all-new body based on a Western Star with a gaudy appearance that was seemingly inspired by Trick My Truck - right down to the six smoke stacks and side pipes!

Chevy Sonic shreds like a skateboard

Despite the fact that the 2013 Chevy Sonic is a fun, plucky little thing - especially in ever-so-slightly hotter RS guise - it is not, in fact, a skateboard. But don't tell that to rapper Theophilus London.
In General Motors' latest spot for the Chevrolet compact, London needs to make a quick run to the store for some milk. And even though, once again, the Sonic is not a skateboard, it ollies, pops and gets air because, you know, it's just so much fun to throw around.
If this video looks familiar to you, it's because this is the full ad that we first got a preview of in Chevy's longer, full-line spot, where the brand's "Find New Roads" tagline was introduced. Scroll down to see this dedicated Sonic spot, along with the older ad, and remember, the Sonic is still - still - not a skateboard.