2007 Jeep Wrangler, Many Upgrades 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.

April Fools' Day brings Jeep Sedan, Hyundai N Roadster, Toyota Yaris pickup and more

There is one day out of the year when public relations professionals have permission to lie to journalists and to the public: April Fools' Day. Manufacturers release details about wild, weird and wacky new technology, concept vehicles and services. Some take it to obvious outlandish extremes (Jeep Sedan anybody?), while others plot to mislead with products that are just outside the realm of possibility. Check out all the "jokes" below. BMW Motorrad BMW doesn't want to exclude anybody from experiencing the thrill of high-level racing, so it is introducing 'iRace" autonomous programming on its S 1000 RR sport bike. It includes beginner, sportsman, advanced and unlimited driving modes, and stores GPS information for all Superbike world championship tracks. Hyundai Hyundai is wrong for this. The Hyundai N Roadster is the work of South Korean designer Yeonjoon Park and features a 2.0-liter turbocharged engine, rear-wheel drive and a hard convertible top. Hyundai says this is a "concept (for now)," but we think it'd make a seriously great Mazda Miata competitor. Honda Honda wins the award for the best interactive gimmick, as its press release for the '90s-inspired special-edition Pastport includes a live hotline number with a message from Fred Savage. Call 1-833-PASTPORT for more information. Jeep Put the Jeep Cherokee face on the Chrysler 300's body, and voila! The 2019 Jeep Sedan is born. We can't decide if the name or the rendering is better. Land Rover Accessibility to charging ports is of major concern to anybody with a plug-in vehicle. So, with the recent launch of the Range Rover P400e and Range Rover Sport P400e, Land Rover is putting forth an effort to install more stations around the globe. First up is Scotland's Isle of Skye. Adventurers need juice too! Lexus Australia Lexus expands its Encore service to include doggos. The new service, called Enpaw, will take pups to luxury boarding kennels in style. Toyota U.S. Toyota created the Yaris Adventure pickup for "those who want to tell their friends they own a truck but never veer off pavement." It's part Mazda 2, part RAV4, 100 percent ute and it looks ... great? Creating a new segment might be all fun and games to Toyota, but Ford is reportedly considering a Focus-based ute in a similar, albeit larger, style. Toyota Australia Toyota is launching a new HiAce van, and it's already getting a limited-edition variant called the PieAce.

Here's what it'll take to build a Jeep Grand Cherokee Hellcat

Let's get one thing straight: We want a 707-horsepower Grand Cherokee Hellcat to happen. Badly. The latest report from Motor Authority is encouraging; the bonkers SUV supposedly has a codename, Project K, and has been given the green light for production. Fingers crossed. You might be wondering why the Trackhawk isn't already a thing. Hellcat engines exist, SRT Grand Cherokees exist, so just combine the two, right? It's not quite that easy. Here, we outline what needs to happen, why it should be the quickest Hellcat vehicle out there, and why it won't come anywhere near 200 miles per hour. How To Build A Hellcat Jeep The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged V8. The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged Hellcat V8. Breathing is important on two counts: pulling in enough air for the combustion to put out 707 hp, and then cooling the various heat exchangers once the engine is up to temperature. Dodge did it with the Charger and Challenger, it can do it with the Jeep. This is one place where the Grand Cherokee's larger frontal area might be a boon, as it gives the engineers more surfaces through which to suck air. Once you generate the 707 horsepower and 650 pound-feet of torque, it has to get to the wheels somehow. Jeep's current SRT all-wheel-drive system will at least need some beefing up to handle the torque. It could require a more complete re-engineering. We at least know the ZF-supplied eight-speed auto, used in the Dodge Hellcat models, is up to the task. The Hellcat engine should fit in the Grand Cherokee, as it's about the same size as the 6.4-liter currently in SRT Jeeps, but the Hellcat is taller because of its supercharger. The hood may need to be raised or at least resculpted for clearance, as well as to address those cooling needs. Quicker Than Everything, But Not Faster 200 mph? We're skeptical, from both a physics standpoint and a legal one. A reminder of the quick/fast distinction: quick is acceleration, fast is road speed. The Jeep's all-wheel drive will help put the Hellcat engine's power to the ground in a more manageable way than the Charger and Challenger do through just the rear wheels. That means better acceleration times than the Dodges (11.0 seconds in the quarter-mile for the Charger Hellcat, 11.2 for its Challenger sibling).