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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.

Zombie cars roundup: Dodge has sold 3 new Vipers this year

Car models come and go, but as revealed by monthly sales data, once a car is discontinued, it doesn't just disappear instantly. And in the case of some models, vanishing into obscurity can be a slow, tedious process. That's the case with the 12 cars we have here. All of them have been discontinued, but car companies keep racking up "new" sales with them. There are actually more discontinued cars that are still registering new sales than what we decided to include here. We kept this list to the oldest or otherwise most interesting vehicles still being sold as new, including a supercar. We'll run the list in alphabetical order, starting with *drumroll* ... BMW 6 Series: 55 total sales BMW quietly removed the 6 Series from the U.S. market during the 2019 model year. It had been available in three configurations, a hardtop coupe, a convertible and a sleek four-door coupe-like shape.   BMW i8: 18 total sales We've always had a soft spot for the BMW i8, despite the fact that it never quite fit into a particular category. It was sporty, but nowhere near as fast as similarly-priced competitors. It looked very high-tech and boasted a unique carbon fiber chassis design and a plug-in hybrid powertrain, but wasn't really designed for maximum efficiency or maximum performance. Still, the in-betweener was very cool to look at and drive, and 18 buyers took one home over the course of 2021.   Chevy Impala: 750 total sales The Impala represented classic American tastes at a time when American tastes were shifting away from soft-riding sedans with big interior room and trunk space and into higher-riding crossovers. A total of 750 sales were inked last year.   Chrysler 200: 15 total sales The Chrysler 200 was actually a pretty nice sedan, with good looks and decent driving dynamics let down by a lack of roominess, particularly in the back seat. Of course, as we said regarding the Chevy Impala, the number of Americans in the market for sedans is rapidly winding down, and other automakers are following Chrysler's footsteps in canceling their slow-selling four-doors. Even if Chrysler never really found its footing in the ultra-competitive midsize sedan segment, apparently dealerships have a few leftover 2017 200s floating around. And for some reason, 15 buyers decided to sign the dotted line to take one of these aging sedans home last year.

Let's Drive NYC is GM's car sharing program for the Big Apple

Under a new car sharing program offered by General Motors and others, a New York Minute will cost about 15 cents. GM is working with a luxury-apartment building owner and a parking lot operator to run a car sharing program in Midtown Manhattan. The program is called Let's Drive NYC and it was announced Thursday. Let's Drive NYC is being offered to residents of the Ritz Plaza, a 479-unit luxury apartment building near New York's Times Square. The program is being run with the help of Icon Parking Systems, which runs about 200 parking garages in Manhattan where the cars can be parked. GM is contributing eight Chevrolet Trax crossovers and two Chevrolet Equinox SUVs, and the automaker is slated to add more vehicles "later." Residents of the Ritz Plaza, which is owned by Stonehenge Partners, can make "periodic apartment lease payments" and in exchange receive electronic credits for three hours of driving a month. After those three hours are up, the drivers will be charged less than $10 an hour, or as much as $75 a day. The program was piloted earlier this year to some of the apartment's tenants. The program marks the second bit of car sharing news in New York within the past two months. In August, Mercedes-Benz and Smart parent Daimler announced that its Car2go car sharing service would expand into Queens and add about 100 Smart ForTwo two-seaters to the city's program. Car2go made its New York debut in Brooklyn last October and has attracted more than 27,000 members since then. You can take a look at Let's Drive NYC's press release below. GM Unveils 'Let's Drive NYC' Car-Sharing Program NEW YORK, Oct. 1, 2015 /PRNewswire/ -- Running an errand to a big box store or planning a weekend excursion are about to get easier for some Manhattan residents because of a car-sharing program revealed today by General Motors. It's the company's latest move to deliver urban mobility options to customers around the globe. Let's Drive NYC is available to eligible residents of The Ritz Plaza, a 479-unit luxury apartment building at Times Square in midtown Manhattan, owned and managed by Stonehenge Partners. Residents use a GM-developed mobile app to reserve a vehicle and access parking in one of 200 garages throughout Manhattan managed by Icon Parking Systems. The fleet currently includes eight Chevrolet Trax small SUVs and two Chevrolet Equinox compact SUVs, with more vehicles to be added later.