2010 Gmc Yukon Denali 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!"

GM to make most cars LTE hotspots for 2015

General Motors isn't the first automaker to deliver in-car Internet access, but a proposed plan announced today could make the technology more widespread than any of its competitors have offered. By the 2015 model year, most Chevrolet, Buick, Cadillac and GMC products in the US and Canada will offer 4G LTE mobile broadband access. Initially, GM will just be pairing with AT&T to deliver this service, but additional carriers will be revealed in the future.
Current in-car Wi-Fi hot spots are limited to 3G, but GM says that 4G LTE is 10 times faster than 3G service and will allow for full Internet access, including streaming video for entertainment as well as services like real-time traffic updates and navigation driving directions. There is also no need for a paired smartphone with this new system, which should make it easier to use, and GM and AT&T will also be working together to develop new apps for customers.
Buyers can expect to start seeing 4G LTE in their cars starting next year, and GM is already planning to expand the service to other global markets as well. All of the information from GM's announcement is posted in a press release below.

2015 GMC Canyon is a Chevy Colorado in Sierra clothing [w/video]

Ford may not offer the Ranger in America anymore, nor Dodge (or Ram) its Dakota. But General Motors - not unlike Toyota with its Tacoma and Nissan with the Frontier - isn't about to give up on the midsize pickup market. Less than two months ago, it revealed the new Chevrolet Colorado, and now it's following up with its mechanical twin, the 2015 GMC Canyon.
Launched today ahead of its reveal at the Detroit Auto Show, the Canyon slots into the GMC lineup (and differentiates itself from its Chevrolet twin) with styling that closely apes the larger GMC Sierra 1500 and Sierra HD, only a size or two smaller. Oh, there are visual differences, like a subtly different grille treatment and lower fascia, but it still maintains its big brother's square-jawed good looks and rectilinear flared fenders.
Two aluminum-block engines with direct injection and variable valve timing are available: a 2.5-liter inline-four comes standard with 193 horsepower and 184 pound-feet of torque, and a 3.6-liter V6 is available with 302 hp and 270 lb-ft. Buyers will also be able to choose between three bodystyle configurations, three trim levels and either two- or four-wheel drive. A six-speed automatic transmits the power to the road, but a six-speed manual is available on the base model with the 2.5 and 2WD, and there's an All Terrain package available on SLE models. A diesel is expected later.