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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.

15 vehicles most likely to surpass 200,000 miles

Americans drive a lot. Collectively, we put, on average, more than 13,000 miles on our cars each year according to the U.S. Department of Transportation. Because of this, a vehicle's ability to travel long distances without major problems is a huge consideration when it comes time to purchase a new one. It's also worth remembering that keeping an older car on the road instead of trashing it and buying new can be considered an eco-friendly decision. After all, it takes a lot of resources to build a car. iSeeCars.com, a website that aggregates used car listings from all around the country, recently ran through the numbers on millions of vehicles that are currently on the road to determine which last the longest. Alternatively, you could choose to look at this list as vehicles likely to be driven by owners who travel long distances. Either way, we've laid out the top 15 vehicles most likely to hit or even surpass the 200,000-mile mark. It's important to note that while these are the vehicles that have stood the test of time up until today, we can't guarantee future results if you decide to opt for one of these from a current model year. That said, unless we specifically say so in the text below, we've used pictures of current models for illustrative purposes. Now, with all of that out of the way, scroll on down for the top 15 vehicles most likely to crest 200,000 miles. 15: Toyota Sienna 14: Honda Odyssey The 15th spot and 14th spot on the list of the top 15 vehicles most likely to surpass 200,000 miles are both minivans. Spoiler alert: They will be the only two minivans on the list. According to iSeeCars, 3.2% of both of these family haulers crest the 200,000-mile mark, making them the best bets for families looking to put a ton of miles on their machines. 13: Honda Ridgeline 12: GMC Yukon The next spot on the list is occupied by the Honda Ridgeline pickup truck with 3.7% lasting past 200,000 miles. Unlike any of the other midsize trucks it competes with, the Ridgeline is based on a unibody chassis. Opting for this more car-like structure — as opposed to a traditional body-on-frame layout — allows Honda's hauler to ride and drive more like a car. Up next is the GMC Yukon, also with 3.7% past the 200K mark, and the first, but very much not the last, big traditional SUV you'll see on the list. In fact, get ready to see a whole bunch of 'em, including several from GMC parent General Motors.

2016 Chevy Volt to make auto show debut this season

Ever since we saw that spy shots of the 2016 Chevy Volt, we've been hungering for more information on the next-gen version of GM's green halo car. It appears we might not have long to wait, at least for an official tease. An inside source that wishes to remain anonymous told AutoblogGreen that GM will make two announcements regarding the second-gen Volt at the CAR Management Briefing Seminars in Traverse City, MI next week. The first, and most intriguing, is that that we will get our first glimpse of the new Volt at some point during the upcoming auto show season. That means either Los Angeles later this year or else Detroit, Chicago or New York in early 2015. The second bit of news is that GM will be moving production of the electric motors from Mexico to Michigan. Details and official confirmation are, of course, missing and Chevrolet declined comment to AutoblogGreen. We should know more next week.