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Watch new Jaguar XF perform a literal high-wire act

Coming out with a new luxury sedan can be a truly daunting prospect. Make it too edgy and you'll risk disenfranchising what can often be a rather conservative customer base. Make it too conservative and you may fail to attract enough new customers or generate enough interest to make the endeavor worthwhile. Whether Jaguar succeeded in walking that thin line with the new XF is a matter of personal taste, blending as it does elements from the smaller XE and the outgoing XF it replaces. But in launching the new model, Jaguar didn't just pull of a figurative high-wire act – it did quite a literal one. To drum up support for its newest debut, Jaguar undertook the stunt depicted in the video above, stringing a pair of carbon-fiber cables some 60 feet above the River Thames in London. With some guide wires and counterbalance weights to keep it all in check, and a motion-picture stunt crew orchestrating it all, the new XF drove over 780 feet from one bank of the river to the other, setting a new world record in the process. Instead of thinking too hard about the whys (seriously, though... why?) and hows, we suggest you just watch the video above. Related Video:

Jaguar releases C-X75 concept build story

If you want to know what was going through the minds of decisionmakers at Jaguar when the company decided to build the batty C-X75 Concept, look no further than the quick video after the jump. Jaguar set about building a car with the performance of a Bugatti Veyron, the electric range of a Chevrolet Volt and the emissions of a Toyota Prius, and they turned to a legendary engineering firm to help make it happen. Williams, the same crew behind Williams F1, helped Jaguar stitch the concept car together, and the result is unlike anything we've seen before.
The twin-charged 1.6-liter four-cylinder mounted amidship is paired with an electric motor at each wheel for a combined output of over 850 horsepower. And, since the whole chassis is hewn from carbon fiber, a production version would've been light enough to give machines like the McLaren P1 and Ferrari LaFerrari a run for their money. Shame they apparently couldn't make the business case work. Watch the concept build story in the video below for yourself.

$4.5M Maryland mansion has a brick street with classic cars in its basement

At one extremely large residence in Potomac, Maryland, the residents need not call the driver to head into town. Instead, the people who lived and will live in this house can simply take a walk downstairs to hit up the post office, or the theater, or the massage parlor. These faux shops are just a small part of a re-created old-style downtown strip, complete with a brick drive and classic collector cars.  Brought to light by Twitter user @victoriaxxviii, 11610 Highland Farm Road, Potomac, Maryland, is a 12,089-square-foot gated mansion that sits on four acres, with the opportunity to buy two more next to it. It has seven bedrooms and eight bathrooms in the main house, a guest house with two bedrooms and a bathroom, and a pool house with a full kitchen and a bathroom. The place also has a heated pool and a tennis court. Yet, none of that would be of interest if not for the items hidden in the home's finished basement.  Best understood by seeing the photos above, the lower level of the house was built to resemble an old town. In addition to the aforementioned stores, it also has a sports shop, a flower shop, an inn, a tattoo parlor, a church, and most important, an auto repair shop and gas station. The repair shop is key, as there are several collectible cars positioned throughout the winding town road. Seen in the photos are a Citroen 2CV, a Jaguar E-Type roadster, a scooter, and a third vintage car that appears to be from the '20s or '30s.  The house was built in 1987 and features four garage spots. It is currently listed for $4.5 million, but it is unclear if the downstairs cars are included in the purchase. Visit Washington Fine Properties for more photos of the house and extra information about its amenities. Related Video: