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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.

These cars are headed to the Great Crusher In The Sky

It happens every year. We bid adieu to some cars and trucks that will be missed, and say good riddance to others wondering how they stayed around so long. Whether they're being killed off for slow sales or due to a new product coming along to replace them, the list of vehicles being discontinued after 2012 is surprisingly long and diverse.
CNN Money has compiled a list of departing vehicles, to which we've added a few more of our own. In the slow sales column, cars like the Lexus HS 250h, Mercedes-Benz R-Class and the full Maybach lineup appear, while the Ford Escape Hybrid, Mazda CX-7 and Hyundai Veracruz are all having their gaps filled with more modern and more fuel-efficient alternatives. Obvious exceptions to the rule include models that still sell in decent numbers like the Jeep Liberty and the Chrysler Town & Country (which will eventually be replaced by a crossover-like vehicle).
Check out our gallery of discontinued cars above, then scroll down for more information.

'Baby Driver' is a car chase movie set to music

The Fate of the Furious is certainly the 6,000-pound SUV in the garage of automotive movies, but that doesn't mean gearheads are starved for options. The upcoming film Baby Driver looks to be a winner for car guys, featuring exciting chases with cars including a "hawk-eye" Impreza WRX, a Dodge Challenger, and a 1980s Chevy Caprice. The movie is written and directed by Edgar Wright, whom you may know as the man behind movies such as Sean of the Dead, Hot Fuzz, and Scott Pilgrim vs. The World. And based on the two trailers released so far, seen above and below, it's about a young man by the name of Baby, who is a getaway driver for criminals. He's apparently the best in the business, and the secret to his success is the music he listens to while he's driving. He also wants out, but his boss, played by Kevin Spacey, has no intention of letting him go. Spacey is one of a number of major stars in the film, including Jamie Foxx and John Hamm. The driving action shown in the trailers definitely looks entertaining. The WRX is seen doing an array of drifts and J-turns. There is some driving precision on display here that wouldn't be out of place in a Gymkhana video. And it looks like Wright's attention to detail in his shots and transitions, as well as some solid comedy relief, are all going to be present. The film comes out this August. Related Video: News Source: Sony Pictures Entertainment / YouTube via Road & TrackImage Credit: Sony Pictures Entertainment / YouTube TV/Movies Chevrolet Dodge Subaru Videos baby driver