1988 Jeep Grand Wagoneer on 2040-cars

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The List: Best of proving grounds

Proving grounds are where automakers and enthusiasts alike go to push their vehicles to their mechanical limits. The Rubicon Trail, located in the Sierra Nevada, is the ultimate off-road test, while Germany's Nurburgring is a grueling 13 mile road and track course. Jessi and Patrick visit both iconic proving grounds in this "best of" compilation of The List. If you like what you see, stay tuned to watch the full episodes, or click here to go directly to our episode archive and pick out some of your own favorite moments of The List to revisit. The List #0004: Conquer the Rubicon Trail The List #0073: Drive the Nurburgring Have an RSS feed? Click here to add The List. Click here to subscribe to The List in iTunes. Click here to learn more about our hosts, Jessi and Patrick. BMW Jeep Off-Road Vehicles Racing Vehicles The List Videos Original Video

The fascinating history of the Popemobile

Pope Francis will be arriving today in the US for a variety of stops, including the World Meeting of Families in Philadelphia, PA. While here, the Pontiff won't be riding in the usual Mercedes-Benz Popemobile, but instead will make a more American switch to a modified Jeep Wrangler, according to the Washington Post. It'll feature a protected front, top, and rear, but the sides will be open for His Holiness to see the throngs of people gathering for him. For hundreds of years, Popes were transported in horse-drawn carriages or sometimes carried in an enclosed chair by footmen, but His Holiness finally traded for some real horsepower in 1929. While his ride sometimes varied depending on the country being visited, a Mercedes-Benz was generally the common choice. However, the Pontiffs have ridden in everything from a modified GMC Sierra to a Ferrari Mondial over the past few decades. Pope Francis has definitely preferred more plebeian transportation, though, including a Renault 4 running on biofuel. A trip to South Korea even put him in a Kia Soul, and he opted for an Isuzu D-Max in the Philippines. The Post's whole list is quite a fun read, and it's fascinating to see how the Popemobiles evolve over time. Related Video:

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.