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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.

Cheapest SUVs of 2024

There is no doubt that cost is the number one decision maker when it comes to purchasing a vehicle. As prices continue to climb, affordable choices are getting harder to find, so we dug through what's available to find the least expensive SUVs in the most popular classes.  These prices are current as of January 2024, using available manufacturer suggested retail prices for 2024 models wherever possible. The prices include destination fees, but not dealer markups or incentives. Cheapest small SUV: 2024 Hyundai Venue Not surprisingly, the most affordable SUVs are the smallest. There's a whole host of subcompact SUVs out there, with some of the first introduced being the Nissan Juke, Mini Countryman and Kia Soul. In the beginning, these micro utes were marketed to empty nesters and first-time buyers, but nowadays they represent an alternative to the conventional sedan and have been increasing market share ever since. Profit margins in this class are narrow and popularity is high, which means the entrants are competitively priced. The top choices in the class are only a couple thousand dollars more than the most affordable alternatives below, so it may make sense to consider our favorites that include the Mazda CX-30, Volkswagen Taos and Chevrolet Trax. 2024 Hyundai Venue: $21,135 The Hyundai Venue debuted in 2020 and earned praise for its overall value. You get a ton of features for the money as well as a very generous warranty. Holding it back is its rather weak engine and very tiny proportions. Honorable mentions: 2024 Chevrolet Trax: $21,495 2024 Kia Soul: $21,565 Cheapest midsize SUV: 2024 Chevrolet Equinox Compact SUVs have the broadest appeal thanks to a very diverse group. It seems as though there's a great pick for nearly every taste, whether you're seeking something sporty, rugged or luxurious. They're a great pick for small families with one child and/or a dog. The class is led by vehicles that include the Honda CR-V, Kia Sportage and Mazda CX-50, which are still within reach of most shoppers' budgets. 2024 Chevrolet Equinox: $27,995 The Equinox debuted back in 2005 and this current third-generation was last redesigned in 2018, though a new one is right around the corner for the 2025 model year. While the current 2024 model may be showing its age, it still deserves your consideration for its comfortable ride quality, confident cornering and roomy passenger space.

China's rise, global restructuring wither GM's Korea division

An article in the Daily Kanban suggests the sun is setting on GM Korea, and it could already be well into dusk. GM Korea came about when General Motors, along with co-investors SAIC and Suzuki, bought Daewoo Motors from parent company Daewoo Group in 2001; it had a previous tie-up with GM, a joint venture that ended in 1992, although Daewoo cars were based on GM cars until 1996. Over the decade following the purchase, it became such an important part of operations that it was renamed GM Korea in 2011, "to reflect its heightened status in [the] global operations of GM." Just two years later, the printed rumors were that the subsidiary responsible for a fifth of Chevrolet's global production could be shutting down. The division's sales were down almost 21 percent through November of last year, counting domestic South Korean sales, exports, and CKD – Complete Knock Down – products. That makes the labor strife, already an issue for four years, even more acute, reports say the subsidiary will lose $36 million a year if it can't get the job and wage cuts it wants, and government concessions can't make up for the losses. And it gets worse, so head over to Daily Kanban to read the rest of the story.