2003 Jeep Wrangler X Sport Utility 2-door 4.0l on 2040-cars

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Chrysler's Jefferson North plant builds 5-millionth SUV [w/video]

Chrysler's Jefferson North Assembly Plant opened in 1992 for production of the first Jeep Grand Cherokee, but in the subsequent years, the Detroit plant has gone on to produce some of the company's biggest SUVs including the Jeep Commander and Dodge Durango. Earlier this week, the plant produced its five-millionth SUV, which, fittingly, was a Grand Cherokee.
Celebrating the plant's five-millionth unit, the silver 2014 Grand Cherokee was promptly donated to the USO. In addition to this milestone SUV, Chrysler also had a near-perfect 1993-95 ZJ Grand Cherokee on hand for the photo op. Scroll down for the Chrysler press release as well as a video showing some of the speeches from the celebration.

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.

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.