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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.

Outrageous Thor24 semi truck to appear in the new season of 'Jay Leno's Garage'

Wednesday is Jay Leno's birthday, and CNBC used the occasion to announce the upcoming season of Jay Leno's Garage. In a new teaser video, Leno is seen with a stacked list of guests, some new, some repeats, as well as a wild gamut of vehicles, including the absolutely insane 24-cylinder, 3,424-horsepower Thor24.  The outrageous semi build, which sold at auction in Saudi Arabia earlier this year for a whopping $12 million (or $1 million per supercharger) will join the likes of the Tesla Cybertruck and a recliner on wheels on the upcoming season of Jay's series.  Thor24 View 24 Photos The formula for Jay Leno's Garage is simple, successful, and not changing anytime soon. He brings out a bunch of famous people, some of which are real enthusiasts, others who have more casual driving backgrounds, and they experience a vehicle together. In the short clip released by CNBC, Leno is accompanied by Elon Musk (again), Danny Trejo, Bill Burr, Tim Allen, Jon Hamm, Brad Garrett, Jeff Dunham, Kelly Clarkson, Matt LeBlanc, Blake Shelton, Norm MacDonald, Edd China, and Jon Lovitz.           View this post on Instagram                   Thank you for sharing your dream with us. Happy Birthday, Jay! Love always, your @cnbcprime Family. A post shared by Jay Leno's Garage (@jaylenosgarage) on Apr 28, 2020 at 8:27am PDT The people, however, are merely social lubricants to spotlight the real stars of the show, the cars. This season will include the Tesla Cybertruck, the record-breaking Bugatti Chiron Super Sport 300+, a 1965 Buick Riviera, a naked cat car, an Aston Martin DBS Superleggera, a Porsche Taycan, a modern Ford GT, a Chevrolet Corvette C8 hard-top convertible, amphicars, a snail car, a beetle car, a couch car, and the 24-cylinder, 12-supercharger, 3,424-horsepower Thor24 semi. Just to name a few. As usual, there will be racing, stunts, spinouts, smoke from both tires and engines, and lots of silly dad jokes. Season 5 of Jay Leno's Garage debuts on CNBC on May 20 at 10 p.m. ET. Related Video: Celebrities Green TV/Movies Aston Martin Bugatti Chevrolet Tesla Special and Limited Editions Jay Leno Jay Lenos Garage

New GM subcompact SUV spied, could be a Chevy or GMC

GM's pair of subcompact crossovers have been trundling along for a while now. The Buick Encore was the first for Americans in the 2013 model year, and the Chevy Trax that was based on the Encore (an encore of the Encore, if you will) arrived for the 2015 model year. Each has undergone a mild update, but these spy photos could indicate their replacements are in the works. Or not. For starters, we can't be sure which GM brand this new SUV is destined for. Though the timing and its flowing lines could indicate Buick, the thick horizontal bars visible in the grille would indicate otherwise. The next Encore being at least related to this is at least a possibility. Making the case for GMC are those thick grille bars, the fact that it extends far below the lights, and may even rise above them, similar to the Acadia. And that rising beltline isn't that different from that of the Acadia. Arguing against the GMC idea is the Encore, which is almost always sold in GMC-Buick combo dealers. Much as the Acadia was made smaller to eliminate confusion and in-house competition with the Enclave, it's hard to see GM opting to resurrect such an issue at the bottom end of the SUV market. That means we're leaning toward this little SUV wearing a Chevy bowtie. The split grille with a large lower section and small upper section is the brand's current design language, as seen on the new Malibus and Cruzes. The shape is vaguely Equinox-like. And like Buick, Chevy also has a subcompact crossover ready for replacement: the Trax. Now, our photographer reports he's seen another subcompact testing that has Blazer design cues, but in this crossover-hungry market, we wouldn't be surprised if two similarly sized but differently styled Chevy crossovers make the grade. It's a strategy that's working pretty well for Jeep. We'll no doubt be seeing more of these disguised test vehicles milling about the country in the coming months, so perhaps we'll eventually get a better idea of what this is before more official information starts trickling out within one or two years. Related Video: Featured Gallery GM Subcompact Crossover spy shots View 10 Photos Image Credit: SpiedBilde Spy Photos Buick Chevrolet GM GMC Crossover SUV buick encore chevy trax