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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.

Here are 12 electric pickups in the works

With the unveiling of the GMC Hummer EV, the list of planned electric pickups is expanding. Legacy automakers like Ford and Chevy have theirs coming, as do startups like Tesla, Rivian and Bollinger, as well as some lesser known brands. Here are all the electric pickup trucks we know to be in the works, along with a few that are being discussed or mulled over. GMC Hummer EV The 2022 GMC HUMMER EV is a first-of-its kind supertruck develop View 40 Photos We’ve seen it now, and itÂ’s the business. The GMC Hummer EV comes out swinging with 1,000 horsepower from GMÂ’s new Ultium electric powertrain program, a wealth of off-road features, a removable roof, Super Cruise and the revival of the Hummer name. WeÂ’ll see the first ones on the road next fall. Tesla Cybertruck Tesla Cybertruck at the Petersen Museum View 14 Photos Tesla revealed the Cybertruck last year with, ahem, unique styling, a number of powertrain options and a claimed range of up to 500 miles. It has a compressed paper dash, a ramp for the bed, and “shatterproof” windows. It has already racked up hundreds of thousands of reservations. It will be built in Texas. Rivian R1T 2021 Rivian R1T View 15 Photos EV startup Rivian revealed its R1T electric pickup toward the end of 2018 with a claimed 0-60 time of 3 seconds and a towing capability of 11,000 pounds. Preproduction began in September 2020 at RivianÂ’s factory in Normal, Illinois. Bollinger Motors B2 Bollinger Motors B2 side outdoors View 31 Photos BollingerÂ’s B2 electric pickup is a Class 3 off-roader with retro styling, removable roof panels, and a unique “frunkgate” with a pass-through down the center of the vehicle. It was created with both enthusiasts and workers in mind, with features that can get it to remote places (portal axles, hydro-pneumatic suspension) and to get things done (room for 40 2x4s, equipped with eight 110-volt outlets and one 220-volt outlet). Bollinger also plans to make the B2 Chassis Cab available for fleet customization. Ford F-150 Electric Electric Ford F-150 Towing View 9 Photos WeÂ’ve known this to be in the works since early 2019. Since then, details have trickled out. Back in June, Ford announced its F-150 Electric would be coming within two years. WeÂ’ve seen it pull a million pounds worth of train and trucks, heard it will have more power than any other F-150, and seen its LED-laden front end.

Recharge Wrap-up: Toyota FCV Rally Car To Compete, Barra bullish on Chevy Volt

The Toyota FCV will compete in the last stage of the 2014 Japanese Rally Championship. The sport-tuned hydrogen-powered car will tackle the 177-mile Shinshiro Rally on November 1 and 2, emitting no greenhouse gases in the process. The rally course will help prove the safety of the vehicle before it goes on sale in Japan in the next several months. The Toyota FCV, rumored to be called "Mirai" in Japan, will begin sales there before April, according to Toyota, and in the summer in the US and Europe. Read more in the press release below. Carsharing is becoming more popular, and more visible, throughout the world, including the US. According to WardsAuto columnist John McElroy, 18 percent of US drivers have used some sort of carsharing service. Additionally, he says 60 percent of Americans are familiar with Zipcar and Uber. Mercedes' Harald Kroeger says promotions like free parking for carshares in Stuttgart are encouraging growth for Daimler's carsharing service, Car2go. Read more at WardsAuto. Ethanol is being help up by rail transport, according to ethanol producer Green Plains. More and more stations are carrying E15 blend gasoline, but grain producers have complained that crude oil is given higher priority by the rail lines shipping it, which rail companies deny. Union Pacific and BNSF Railway say they are stepping up service to make sure that ethanol can be shipped reliably to customers. Read more at Omaha World-Herald. General Motors "has placed a significant bet [on] the electrification of the automobile," says CEO Mary Barra. In a speech to the Detroit Economic Club this week, she spoke about the Chevrolet Volt, and its importance to GM's future. While Barra admits the Volt's success has been "not everything we wanted," it has provided experience, and shows that EVs have "an important role in the future of GM." The new Volt is more refined, stores more energy, has longer range, uses less fuel and is a big investment for Michigan. She announced that the new Volt's electric drive system will be built in Warren, and that all of its major components will be made in Michigan. "Silicon Valley doesn't have a corner on the market for innovation, creativity and drive," says Barra. "These qualities exist here – in this region – as well." See the speech's highlight video and read more in the transcript below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.