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Watch this 840-hp Jeep Grand Cherokee SRT8 walk away from GT-Rs and M3s

This last-generation Jeep Grand Cherokee SRT8 does things that SUVs just shouldn't be able to do, like win drag races against tuned Nissan GT-R and BMW M3 coupes. Granted, the owner isn't coming into this fight with a stock Jeep – far from it. In addition to twin turbos whistling away, he says the engine is a 449-cubic-inch V8, which is nearly 7.4 liters of displacement. As it runs here, the driver claims that the turbos are pumping out around 14 psi of boost to give an estimated 840 horsepower. What's more, he further maintains the powertrain could reach around 1,200 hp with things fully cranked up. Even somewhat dialed back, this Jeep is ready to take on a breadth of formidable challengers, including a couple of Chevrolet Corvette models and a Lamborghini Aventador. Check out the video to see how this menacing Grand Cherokee fares in a day at the races.

Junkyard Gem: 1983 AM General postal Jeep DJ-5L

When neither snow nor rain nor gloom of night will stay you from your appointed rounds, you don't need fancy styling or futuristic technology. All you need is a simple steel box with four wheels, one seat (on the right-hand side), a mail-sorting tray, and an engine. The Jeep DJ was that vehicle, and DJs served as workhorses for the United States Postal Service starting in 1955 and — in some rural areas— into our current century. Here's one of the last ones made, found covered with snow in a Denver self-service wrecking yard. Related: Postal truck prototypes spied from Oshkosh and Karsan When American Motors bought Jeep in 1970, it built and sold DJs via its AM General subsidiary. The DJ-5 was a stripped-down, two-wheel-drive version of the pretty-spartan-to-start-with Jeep CJ, and there wasn't much to go wrong with it. The final year for the DJ-5 was 1984. During the AMC era, the DJ received an ever-shifting array of engines, depending on what looked like the best deal in Kenosha at a given time. Starting with the Chevrolet Nova straight-four, Jeep DJ engine compartments boasted AMC straight-sixes of 232- and 258-cubic-inch displacements, followed by Audi 2-liter straight-fours (yes, the same engine used by the Porsche 924), then the 2.5-liter GM Iron Duke four, and finally the 2.5-liter AMC straight-four. This DJ-5L has Duke power. The early DJs had manual transmissions, but all the AM General DJ-5s came with automatics. If you think an Iron Duke powering a Jeep is odd, consider that it's bolted to a Chrysler Torqueflite transmission. Once the USPS was done with them, cheap DJ-5s flooded the market. This one has had a random junkyard seat swap, but retains the handy mail-sorting tray. Featured Gallery Junked 1983 Jeep DJ-5L View 21 Photos Jeep Commercial Vehicles Classics amc mail truck

Chrysler recalls 468,700 Jeep Grand Cherokees, Commanders over rollaway risk

Chrysler has issued a recall covering a combined 469,000 units of the 2005-2010 Jeep Grand Cherokee and the 2006-2010 Jeep Commander (inset). Of that number, 295,000 are in the US, roughly 33,000 in Canada and Mexico and the remainder in other markets. It seems an electrical fault in the transfer case can allow the affected SUVs to shift into neutral on their own, while an Associated Press report says that Chrysler had "found cracks in a circuit board that turns the four-wheel-drive system on and off." The issue was discovered when an owner started his car remotely and it rolled away.
Chrysler is expected to begin notifying owners in June 2013, who can then take their cars to dealers. The dealer will reflash the final drive controller free of charge. There's a bulletin from the National Highway Traffic Safety Administration below with more information.