2006 Jeep Liberty Renegade Sport Utility 4-door 3.7l on 2040-cars

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Submit your questions for Autoblog Podcast #336 LIVE!

We're set to record Autoblog Podcast #336 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #336
Jeep rear-mounted fuel tank controversy

Chrysler delays 2014 Jeep Cherokee media launch

Chrysler is making the unusual move of delaying the first media drives of the 2014 Jeep Cherokee, which were slated to start next week in Seattle. And while something like this is a rare occurrence, and one that most of the Autoblog staff can't recall happening this publicly or so close to the event itself, it won't effect the actual on-sale date of the new Cherokee, which is set to hit showrooms in September.
"Over the last couple of weeks during final quality and durability testing, we have discovered the opportunity to further improve powertrain calibration," Chrysler told Automotive News. This marks the second notable delay in the Cherokee's short life, after production was delayed for roughly a month earlier this summer.
Still, we'd rather Chrysler make sure the Cherokee is ready for primetime before flying media in from around the country. It shows a willingness to get things right the first time, rather than offering media drives and then tweaking the car after the fact.

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.