Click above to view video after the jump

The coming Jaguar XF-R has been caught in the valley of death. It was accompanied by a Jaguar XJ mule and shepherded by a fleet of Land Rovers charged with blocking the all-seeing eye of someone's Sony Handycam. Fortunately for us, they failed. The driver of this particular prototype XF-R couldn't keep his foot off the throttle, as at different points in the video you hear the growl of a big displacement V8 and the accompanying scream of a supercharger. Other than vents in the hood to let that 5-liter V8 breathe, the body modifications look to be exceptionally tame. With 500 horsepower, however, its acceleration should be quite the opposite. Follow the jump to check out the video.

[Source: YouTube via Carscoop]

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