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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.

Next-gen Chevy Cruze caught cruising in the cold

Spy photographers have caught what looks like the next-generation Chevrolet Cruze out on snow patrol. The camo could be tricking our eyes, but it look like it has an even tidier, more rounded front end and even lower fenders in relation to the top of the hood. And either a chunk of camo has been wedged between the side mirrors and the doors, or the mirrors are up for revision, too.
The door handles have been moved up the side of the car, leading the way to a rear end that grows a bit in length. If the rumors are true, the coming second-generation Cruze sits on the new D2XX platform that will replace the Delta and Theta platforms at General Motors. A global architecture, the Cruze will be the first to get it, but it will underpin everything from next Chevrolet Volt to the Equinox and could be responsible for 2.5 million units by 2018. The next Cruze is expected to begin production in GM's Lordstown, Ohio plant in the third quarter of 2014.

New Forza Horizon 2 pack features Chevy Monte Carlo SS, Audi RS6 Avant [w/video]

The latest car pack for Forza Horizon 2 is hitting Xbox Live today, giving Xbox One owners a shot at six new vehicles that date back to 1970. Leading the charge in the hearts and minds of the Autoblog staff is, of course, the 1988 Chevrolet Monte Carlo SS, one of the most 80s-tastic performance coupes of its time. Chevy's 80s-era NASCAR representative is joined by another General Motors performance two-door, in the form of the 1970 Buick GSX. Complete with a 455-cubic-inch V8, the GSX could best be thought of as the grandpappy to the iconic GNX of the late 1980s. Crossing the pond, we have a trio of offerings from the United Kingdom, with the 2002 Lotus Esprit V8, the redesigned, aluminum-intensive 2014 Land Rover Range Rover Supercharged and finally, the 2015 McLaren 650S. The mid-engined offerings should be a riot on the winding roads of Forza Horizon 2's European locales, while the Range Rover should make cross-country efforts an absolute breeze. Finally, virtual wagon lovers will be able to enjoy the 2015 Audi RS6 Avant and its combination of Quattro all-wheel drive and a twin-turbocharged V8. As per usual, this latest car pack will be available to gamers for $5 while season pass owners will score the sextet of vehicles for free. Scroll down for a video of the new offerings in action, as well as the official press release from Turn 10 Studios. "Forza Horizon 2" NAPA® Chassis Car Pack Now Available The roads and countryside of "Forza Horizon 2" beg for you to leave your mark on them. The NAPA® Chassis Car Pack for "Forza Horizon 2" on Xbox One has arrived, bringing five amazing new cars to blaze trails, break records, or just enjoy a casual cruise in. First off, the new McLaren 650S Coupe's uncanny acceleration and preposterous top speed will satisfy the elitist in you. If you want get away from it all, there's no better way than in the Supercharged Land Rover. Need muscle? Take the classic form of the Buick GSX or the later model Monte Carlo SS for a spin. We all need more wagon in our lives and the Audi RS6 is ready to run around town or serve up surprises at the track. The NAPA® Chassis Car Pack for "Forza Horizon 2" on Xbox One is available today for $5 in the Xbox Live store. Starting today, also available this month for free for all Xbox One players is the 2002 Lotus Esprit V8.