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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).

Jeep Renegade configurator switches on

Less than a week after letting loose with pricing information for its 2015 Renegade, Jeep has powered up the configurator for its new compact CUV, giving us our first complete look at pricing for the model's healthy options catalog. If you've messed around with any of FCA's other online configurators, the Renegade's will be immediately familiar. Pick a trim, interior and exterior color, optional extras and packages, and you're done. Of course, we don't write these posts just to let you know about a configurator going live. We do them because it gives us an excuse to mess about with all the different varieties of a new model, and, on occasion, to build something surprisingly expensive or cheap, just to see if it can be done. The Renegade certainly has no issues when it comes to the former. If you want the priciest model, you'll need the $25,995 Trailhawk, which can be priced up to $33,330. We got to that figure by adding the $1,495 Trailhawk Premium Group (heated, powered leather seats, dual-zone climate control, heated steering wheel, 40/20/40 split-rear seats), the $595 Safety and Security Group I (blind-spot monitoring with cross-traffic assist and an alarm), the $395 Trailer Tow Group, the $1,395 powered MySky system, a $150 hood decal (which might mean that you can get a Trailhawk without a black stripe), a $1,295 navigation system with satellite radio, a $495 nine-speaker stereo, a $295 push-button starter, a $200 remote starter and a $75 tonneau cover. Will you need all of those options? Not really. But many of them would certainly fall into the "must-have" category for customers. Head over to Jeep's consumer page and mess about with the configurator, and let us know what you think of the full pricing (and what your ideal spec looks like!) in Comments. Related Video:

Fires, deaths continue after Jeep fuel tank recall

As Kayla White slowed her SUV behind two other cars to exit a suburban Detroit freeway on Veterans Day, it was rammed from behind by a Cadillac STS. Her red 2003 Jeep Liberty bounced off a Nissan in front of it, rolled onto its side and exploded in flames. Other drivers ran to help but were forced back by the heat. Firefighters arrived in just three minutes but were too late. White, a 23-year-old restaurant hostess who was eight months pregnant, died of burns and smoke inhalation. White is one of more than 70 people killed in fires involving older Jeeps with plastic fuel tanks mounted behind the rear axle. Fiat Chrysler, which makes Jeeps, recalled 1.56 million of them in June 2013 under pressure from US safety regulators. But only 12 percent of the SUVs have been repaired in the 18 months since the recall, a much slower pace than usual. And White's Jeep was not among those fixed. Last week, prosecutors charged the Cadillac driver with committing a moving violation that caused a death. But safety advocates and the lawyer for White's family say the blame belongs as much, if not more, on Chrysler and an auto-industry safety system that moves too slowly to prevent tragedy. The rear-mounted tanks have little structure to protect them if struck from behind, making them susceptible to punctures and fires. Moving the gas tank in front of the axle would be expensive and difficult. So Chrysler's remedy involved installing trailer hitches on the rear of the Jeeps as an extra layer of protection. Government testing showed the hitches protected the tanks in crashes up to 40 mph when stationary Jeeps were hit from behind. But at higher speeds, they wouldn't help. White tried to get the repair done a few weeks before her death but was told by a Jeep dealer that parts weren't available, according to Gerald Thurswell, her family's lawyer. He wouldn't identify the dealership, and his contention could not be independently verified by The Associated Press. Thurswell contends the gas tank ruptured, spilling fuel that touched off the fire. A Chrysler spokesman expressed sympathy to White's family but said the company had no written proof that she asked a dealer about the recall. Two crash reconstruction experts interviewed by the AP say gas wouldn't have spilled from White's Jeep if the tank had been mounted in front of the rear axle. Both say a hitch might have prevented the tank from being damaged, but because both vehicles were in motion, neither expert could say for sure.