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Official USPS Muscle Cars stamps coming to a mailbox near you

As much as our digital lives have cut down on our trips to the post office, there are still times that sending "snail mail" is necessary. With us car lovers in mind and philately in their hearts, the good folks at the United States Postal Service will introduce a new stamp design called "Muscle Cars" starting on February 22.
Designed by artist Tom Fritz, the new collection of stamps consist of five classic muscle cars: 1969 Dodge Charger Daytona, 1970 Chevrolet Chevelle SS, 1967 Shelby GT-500, 1966 Pontiac GTO and 1970 Plymouth Hemi 'Cuda. In addition to just the stamps, the USPS is also commemorating the new series with plenty of collectable memorabilia. Previous car-related stamps include 50s Sporty Cars from 2005 and 50s Fins and Chrome from 2008.

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.

Driving the Toyota Supra, Honda Passport and BMW 3 Series | Autoblog Podcast #582

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Green Editor John Beltz Snyder and West Coast Editor James Riswick. First, they talk about the cars they've been driving, including the Honda Passport, BMW 330i and Audi RS5. They follow up with notes about driving the Toyota Supra and 86, and whether Toyota's new sports car strategy makes sense. Then they discuss the news, including the Ferrari SF90 Stradale plug-in hybrid, a possible Renault-FCA merger, death rumors for the Jaguar XJ and thoughts on the upcoming Chevy Trailblazer. Autoblog Podcast #582 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving: 2019 Honda Passport 2019 BMW 330i 2019 Audi RS5 Sportback Toyota Supra, 86 and the company's sports car strategy In the news: Ferrari SF90 Stradale FCA and Renault Jaguar XJ going away? Chevy Trailblazer Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: