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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.

Recharge Wrap-up: Volt makes up third of Quebec Chevy dealerships sales, Tesla seeks Aussie talent

A Chevrolet dealership in Quebec has had the Volt make up 35 percent of its sales so far this year. Bourgeois Chevrolet in Rawdon, Quebec received recognition for the feat at the 2014 Electric Vehicle Conference, where it won the award for Leading Plug-in Hybrid Electric Vehicle Dealership. To sell that many, Bourgeois Chevrolet had to import used Volts from the US, and keeps about 50 units on the lot in various configurations. The conference also saw Park Avenue Nissan of Brossard, Quebec win the Leading Battery Electric Vehicle Dealership Award, and Loch Lomond Mitsubishi of Saint John, New Brunswick receive the award for Electric Vehicle Dealership Inspiration. Read more at Green Car Reports. Tesla Motors has begun scouting Australian engineers as other automakers shutter operations there. Ford, General Motors and Toyota have announced that they will shut down their Australian factories, leaving behind a lot of unused talent. Tesla recently held a "Recruiting Open House" in Melbourne for engineers to fill positions at its plant in Fremont, CA, where they will be paired with other Aussie engineers already on staff. Read more at Green Car Reports, or at Motoring. Electric turbochargers may come to play a key role in making internal combustion engines more efficient. Valeo recently showed an electric turbo it plans to supply to an unnamed automaker at a fuel economy showcase event at the EPA's National Vehicle Emissions and Fuel Lab. Electric turbochargers have the advantage of greatly reduced lag when compared to exhaust-driven turbos. They also work well when paired with cylinder deactivation, providing a much-needed boost when driving on a grade, which can help reduce the need for cylinders to reactivate. Independence from the exhaust system also makes it easier to package the turbocharger wherever there is room. Read more from Navigant Research. US crude oil futures have dropped to their lowest in more than two years. Saudi Arabia cut oil costs for the US and raised them for Europe and Asia as the US has increased output. On November 3, US crude futures fell as much as 2.2 percent in New York. West Texas Intermediate closed at $78.78, the lowest since June 2012. Brent crude slipped $1.08 to $84.78 a barrel. Read more at Bloomberg.

Weekly Recap: Chevy and Alfa plot comeback strategies

Chevrolet and Alfa Romeo were two of the 20th Century's most iconic automotive brands. Chevy embodied America's post-war power and confidence. Alfa was the definition of the stylish Italian sports car. They reached halcyon heights in the 1950s and '60s, before declining precipitously amid new competition, changing consumer tastes, and uneven corporate management. Both say 2015 is the start of something better, and this week Chevy and Alfa laid out ambitious plans and showcased new cars that they hope will make them more relevant this year, and in the coming years. Each brand sits at its own crossroads, and their paths forward are as different as the Chevy Cruze and the Alfa Romeo Giulia. Chevy is still a sales beast, as evidenced by its volume of 4.8 million vehicles sold around the world last year. Chevy executives are fond of saying one of their cars is sold every seven seconds, which illustrates the strength and reach of a car brand that is the fourth largest in the world. "Make no mistake about it, we are a brand for the people," said General Motors North America president Alan Batey. But he wants consumers to want to buy a Chevy for its design and technology, not simply because it's affordable. That starts with all Chevys now featuring a distinctive a family look, with sporty cues from the Corvette or strong lines that riff on the Silverado pickup. "We want people to fall in lust with our cars," said Mike Pevovar, executive design director for Chevy passenger cars. "That initial emotional attraction has to be right on the exterior, and that's where form comes into play." Chevy is also loading up its cars, like the freshly unveiled 2016 Chevy Cruze, with technology to appeal to a younger crowd that prizes connectivity. The Cruze will offer Apple CarPlay and Android Auto with its MyLink infotainment system, and OnStar with 4G LTE and wifi. Seeking out younger buyers is also sound business practice: Millennials now outnumber Baby Boomers as the largest single age group in the United States. Younger buyers also can improve a brand's image, which is another area where Chevy would like to improve. Chevy ranks 82nd on Interbrand's Best Global Brand's list, behind 11 other automakers. Apple is No. 1. "We need our own variation of the Genius Bar," Batey said. 2016 Alfa Romeo Giulia View 3 Photos Meanwhile, Alfa is in different shape.