2010 Jeep Grand Cherokee 4dr 4wd Laredo on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

Hendrick wants to put Jeep Wranglers back on the battlefield

The Jeep Wrangler could be headed back to the battlefield. According to reports, negotiations are currently under way with the US Army to adapt the iconical American off-roader for military use. The Wranglers would serve as inexpensive, lightweight, unarmored vehicles that could be more easily airlifted into remote locations than costlier, heavier, and bulkier options. The proposal is not being fielded by the Jeep brand itself or its parent company Fiat Chrysler Automobiles, but by Hendrick Dynamics. The Charlotte-based offshoot of NASCAR racing team Hendrick Motorsports calls its modified Wrangler the Hendrick Commando. Instead of the 3.6-liter Pentastar V6 found in most US-market Wranglers, the Commando version employs the 2.8-liter diesel four built by VM Motori, modified to run on any type of diesel fuel or on JP-8 jet fuel to maximize its deployment versatility and comply with the Army's Single Fuel mandate of 2012. It would also support a variety of modular attachments for specific jobs, ranging from machine gun mounts and counter-mine rakes to radar arrays and advanced communications equipment. Hendrick says the Commando could also be deployed by helicopter or in cargo planes. And because it's based on a civilian platform, the Commando would also benefit from the latest advancements introduced by its manufacturer, the parts and service network already in place, and the thorough testing that's already gone into developing the Wrangler for civilian use. Hendrick has reportedly built 14 prototypes to date, including the two-door Commando 2 (based on the standard Wrangler), the four-door Commando 4 (based on the Wrangler Unlimited), and even a pickup conversion called the Commando S. It is not, however, the only company adapting Jeep Wranglers for military application. Israel-based Automotive Industries Ltd has been producing successive versions of the Wrangler-based Storm for use by the Israel Defense Forces and other militaries overseas since 1990. If the US Army awards the contract for the Commercial Off-the-Shelf (COTS) vehicle to Hendrick Dynamics, it would bring the iconic Jeep back to the battlefield where it got its start. The brand and its most prolific model trace their roots back to the Willys MB, launched in 1941 on contract from the US Army for deployment in World War II.

NHTSA closes probes on Jeep Grand Cherokee, Ford Freestar and Mercury Monterey

The Detroit News reports the National Highway Traffic Safety Administration has officially closed its investigations into 2012 Jeep Grand Cherokee, 2004-2005 Ford Freestar and Mercury Monterey models. The separate probes found no issues that pose safety concerns. NHTSA began investigating certain Grand Cherokee SUVs over complaints that power steering hoses could detach during operation, thereby increasing the risk of a vehicle fire. Of the 24 reports of failure, none alleged smoke or fire in the engine bay, and Chrysler has since modified the power steering cooler assembly to reduce the likelihood of the failure.
Meanwhile, certain Ford Freestar and Mercury Monterey vehicles garnered a government probe after receiving complaints that the models were equipped with faulty scissor jacks. The agency had received six reports of the jacks failing or causing injuries, including one incident that resulted in a fatality. But NHTSA says the jack failure rate is similar to those found in other vehicles. In those six cases, the government agency found the jacks were being used for something other than changing a tire, and investigators could not determine whether the emergency brake was set or the rear tires were properly chocked.