2015 Jeep Grand Cherokee 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.

Jeep going bigger with new Grand Wagoneer, smaller with sub-Renegade?

The headlines are still rolling in for the new Renegade that Jeep unveiled at the Geneva Motor Show last week, but already reports are surfacing, citing sources within the company, about what Chrysler's iconic off-road brand will do next.
Speaking with Auto Express (whose reports we tend to take with a grain of salt or two), Jeep chief Mike Manley suggested that two courses of action are currently under consideration at Auburn Hills to develop two very different new models - one smaller and one larger than anything Jeep currently makes.
One plan would be to make an SUV or crossover even smaller than the new Renegade, although it isn't immediately clear what platform it would take. The Renegade (pictured above in Trailhawk spec) will be built in Italy alongside Fiat's upcoming 500X, but uses a heavily modified platform. We figure the smaller model, if approved, could base itself on the new Fiat Panda Cross.

Radical 2016 Jeep Wrangler suggested by job listings?

With most inside the industry expecting the next-generation Jeep Wrangler to arrive for the 2016 model year, it makes sense that the automaker would be looking for some choice candidates to to fill program openings as the off-roader goes through its development. A recent ad on Chryslercareers.com suggests to some that the lightweight Wrangler Stitch Concept, revealed just two months ago and shown above, provides some clues about the off-road icon's next iteration.
According to Automotive News, the job descriptions - which don't name the model specifically - hint that the next-generation Wrangler will benefit from a serious diet. The ads appear to seek those familiar with advanced high-strength steels, hinting that lightweight aluminum body panels may appear on the 4x4. In addition, there are suggestions that Jeep may fit the Wrangler replacement with air suspension, as seen on the Ram and Grand Cherokee, to retain ample off-road clearance yet lower that chassis to improve aerodynamics at highway speeds. The job postings reportedly also lend credence to the idea of a diesel Wrangler.
It seems every bit of the next-generation Wrangler is up for review, as it will be the first time this iconic model is redesigned under Fiat ownership. Questions remain whether or not the Jeep will retain its clip-down hood, easy-to-remove door pins and folding front windshield - loyalists expect them, but fuel economy and safety standards may crimp their cases for survival.