Diesel, Mega Cab, Longhorn, Laramie - Very Clean on 2040-cars

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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.

2015 Dodge Challenger Drag Pak previewed

Dodge and Mopar have never strayed far from success in drag racing, be it on run-what-you-brung nights at the local strip or at the highest levels of the sport. Hoping to both add to that heritage and capitalize on some of the media spotlight that's shown so brightly on the brand of late, Dodge has given us our first look at the 2015 Mopar Challenger Drag Pak test car.
Though this first iteration doesn't make use of the 707-horsepower Hellcat engine, it seems to be a pretty formidable racing package. Starting with a stock '15 Challenger, Mopar adds a full roll cage built to National Hot Rod Association specs. Rubber front and back is drag racing-ready as well, with 28x4.5-inch tires in the front, and fat 30x9-inch tires out back - all from Hoosier.
Powering the beast is a massive 426-cubic-inch (7.0-liter) Hemi Race V8, with output levels that are still unspecified. A Chrysler 727 automatic transmission connects up to a racing style shift lever, with integral line lock.

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"