2010 Jeep Grand Cherokee Srt8 Sport Utility 4-door on 2040-cars

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Watch this 840-hp Jeep Grand Cherokee SRT8 walk away from GT-Rs and M3s

This last-generation Jeep Grand Cherokee SRT8 does things that SUVs just shouldn't be able to do, like win drag races against tuned Nissan GT-R and BMW M3 coupes. Granted, the owner isn't coming into this fight with a stock Jeep – far from it. In addition to twin turbos whistling away, he says the engine is a 449-cubic-inch V8, which is nearly 7.4 liters of displacement. As it runs here, the driver claims that the turbos are pumping out around 14 psi of boost to give an estimated 840 horsepower. What's more, he further maintains the powertrain could reach around 1,200 hp with things fully cranked up. Even somewhat dialed back, this Jeep is ready to take on a breadth of formidable challengers, including a couple of Chevrolet Corvette models and a Lamborghini Aventador. Check out the video to see how this menacing Grand Cherokee fares in a day at the races.

Jeep rocks the Wrangler Red Rock concept in Vegas [w/video]

The SEMA show may have once been all about dropping rides to the floor, but these days it's at least as much about jacking them up on lifted suspensions. And few show cars – or trucks, we should say – managed to embody that spirit at this year's tuner exposition quite as well as the Jeep Wrangler Red Rock you see here. The concept started out life as a Wrangler Unlimited, but instead of four doors, it has none. Or any roof, for that matter. Just a roll cage and a windscreen. What it does have are 17-inch wheels wearing 35-inch BF Goodrich tires and fitted to a suspension lifted by two inches. It also has a reinforced tailgate, power winch, tow hooks... everything, in short, that you could want or need for off-roading, and little more. As you can see, it also looks the business, with a custom hood, body-color grille, matte-finish bumpers, and a brown leather interior. Handsome as it is, though, its rugged beauty runs more than skin deep: lift off the sheetmetal and you'd find electronic locking differentials, a transfer case, and solid axles fore and aft. A more extreme take on the existing Jeep Wrangler Unlimited Rubicon Hard Rock edition, the Red Rock show truck was done up to honor the organization behind the Easter Jeep Safari that's a favorite among the legions of the Jeep faithful. And while it remains a concept only for the time being, a production version is slated to follow in time to celebrate the event's 50th anniversary next year. Related Video:

Feds fretting over remote hack of Jeep Cherokee

A cyber-security gap that allowed for the remote hacking of a Jeep Cherokee has federal officials concerned. An associate administrator with the National Highway Traffic Safety Administration said Thursday that news of the breach conducted by researchers Chris Valasek and Charlie Miller had "floated around the entire federal government." "The Homeland Security folks sent out broadcasts that, 'Here's an issue that needs to be addressed,'" said Nathaniel Beuse, an associate administrator with the National Highway Traffic Safety Administration. Valasek and Miller commandeered remote control of the Cherokee through a security flaw in the cellular connection to the car's Uconnect infotainment system. From his Pittsburgh home, Valasek manipulated critical safety inputs, such as transmission function, on Miller's Jeep as he drove along a highway near St. Louis, MO. The scope of the remote breach is believed to be the first of its kind. The prominent cyber-security researchers needed no prior access to the vehicle to perform the hack, and the scope of the remote breach is believed to be the first of its kind. A NHTSA spokesperson said the agency's cyber-security staff members are "putting their expertise to work assessing this threat and the response, and we will take action if we determine it's necessary to protect safety." A Homeland Security spokesperson referred questions about the hack to Chrysler. Fiat Chrysler Automobiles has already been the subject of a federal hearing this month, in which officials scrutinized whether the company had adequately fixed recalled vehicles and repeatedly failed to notify the government about defects. But cyber-security concerns are a new and different species for the regulatory agency. Only hours before the Jeep hack was announced by Wired magazine earlier this week, NHTSA administrator Dr. Mark Rosekind said hacking vulnerabilities were a threat to privacy, safety, and the public's trust with new connected and autonomous technologies that allow vehicles to communicate. NHTSA outlined its response to the cyber-security challenges facing the industry in a report issued Tuesday. In it, the agency summarized its best practices for thwarting attacks and said it will analyze possible real-time infiltration responses. But the agency's ability to handle hackers may only go so far.