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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.

GM, Ford, Toyota, Stellantis CEOs want EV tax credit cap lifted

For just over a decade now, the U.S. has had a federal tax credit worth up to $7,500 for buyers of electric cars and plug-in hybrids. The catch has been that, once 200,000 of them were claimed for a manufacturer, that credit would be phased out. Now, automakers are asking for this cap to be lifted across the board, specifically General Motors, Ford, Toyota and Stellantis. The request comes in the form of a joint letter to Congress (which you can read here), signed by the CEOs of each company. And the ask really is as simple as that. The automakers would like the cap lifted for all EV manufacturers, and instead have a sunset date for the tax credit put in place. Broadly speaking, they want it lifted because of concerns about rising costs from materials and supply chain issues, which can lead to higher prices and could discourage buyers from getting an EV. It would also put automakers back on an even playing field. GM reached its tax credit cap a few years ago, meaning that none of its EVs are eligible for the tax credit. So while it reaped the benefits early on, it now has something of a disadvantage to competitors with credits remaining, such as those that signed on to this letter. GM wouldn't be the only beneficiary. Tesla ran out of credits years ago, too. Nissan still has credits, but likely not for much longer, as InsideEVs reports around 190,000 Leafs have been sold in the U.S. as of April. So it will probably face a phase-out soon, just as the anticipated, and more expensive, Ariya is heading to market. Making this change would also seem like a good choice for continuing to stimulate EV sales, if that's what the government is looking to do. While EVs are now reaching parity in practicality and performance with gas-powered cars, having an additional financial incentive will surely keep them looking more attractive. And automakers can push EVs without fear of running out of credits early. Certainly some sorts of changes to the EV tax credit are likely. There are bills in the works focusing on cap changes as well as the amount of money available, and which vehicles are eligible. Credits up to $12,500 have been proposed, plus possible credits for used EV sales and restricting some credits to vehicles of certain price brackets. Of course, any changes will require some cooperation in a deeply divided Congress. Related Video: Government/Legal Green Chevrolet Chrysler Ford Toyota Electric EV tax credit

Chevy Cruze gets first official tease

The Cruze has been a runaway success for Chevy. In fact the company has sold over 3.5 million of them since its introduction in 2008. And now the company is preparing to roll out the all-new second-generation model, previewed in the teaser image above. Set to be unveiled on June 24, the 2016 Cruze promises to be larger, yet lighter, that the model it replaces. It will pack new engines, safety features, and technologies – including the integration of Android Auto and Apple CarPlay. The new Cruze will be based on the same platform that underpins the new Volt and (among others) the new Opel Astra just introduced in Europe. It'll be a vital model for Chevy, which sells the Cruze in 115 countries around the world – chief among them China, Brazil, Canada, and these United States, where sales continue to rise despite the model's age and impending replacement. Look for the second-gen Cruze to hit dealers early next year, joining a revitalized Chevy lineup alongside such notables as the new Spark, Malibu, and Camaro. Cruze Control: Success Paves Way for Next Generation Chevrolet's best-selling global car surpasses 3.5 million sales 2015-06-03 DETROIT – Chevrolet Cruze, the brand's best-selling car around the world, has surpassed 3.5 million global sales, a milestone that comes as Chevrolet prepares to introduce the next-generation Cruze on June 24. "When we introduced the Cruze it replaced 15 other compact vehicles around the globe," said Alan Batey, president, General Motors North America and global Chevrolet brand chief. "By consolidating design, engineering and marketing efforts, we were able to produce an award-winning, value-driven sedan that won over customers around the world." Cruze is sold in 115 countries. The top global markets include China, the United States, Brazil and Canada. In the United States, Cruze total sales were 273,060 in 2014 – a 10 percent increase over 2013. It is also the segment's second-best seller to customers under 25 in the U.S. Importantly, Cruze brings new buyers to Chevrolet – 35 percent of all buyers are new to the brand. Additionally, of those who trade in a Cruze, 56 percent stay with Chevrolet and 23 percent trade in for another Cruze. "In every corner of the globe, Cruze has been successful at introducing new and younger customers to Chevrolet," said Batey.