1990 Chevrolet Blazer Silverado Sport Utility 2-door 5.7l on 2040-cars

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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!"

Submit your questions for Autoblog Podcast #313 LIVE!

We record Autoblog Podcast #313 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #313
2014 Chevrolet Silverado and GMC Sierra introduced

2015 Chevrolet Cruze spied on its home turf

The next Chevrolet Cruze isn't set to go into production for about another year, and we're just now seeing prototypes of the new compact running around here in the States. Not much more has been revealed since we saw the car blasting through the snow in Europe, but we can still clearly see new design elements like the larger grille, slimmer headlamps and redesigned taillamps.
Our spy photographers worked up a composite image of this Cruze prototype alongside the current model, and here, we can clearly see some big visual changes are in store for the new model. The 2015 Cruze's hood slopes downward more dramatically, the windshield is more heavily raked, and the roofline looks more fluid overall. The next-generation Cruze will ride on the new global Delta platform that will also underpin other General Motors vehicles like the Chevrolet Volt and Equinox.
As for what's under the hood, we expect the normal range of gasoline four-cylinder engines (both naturally aspirated and turbocharged), and the compact's new turbodiesel four should carry over, as well. Have a look at the full brace of spy photos in the gallery above.