Cadillac's Executive Chief Engineer David Leone shows Jay the refined luxury sedan that turns into a track monster with the flip of a switch. And yes, it's the first 200 mph Cadillac ever! » Subscribe: http://bit.ly/JLGSubscribe » Visit the Official Site: http://bit.ly/JLGOfficialSite THE BEST OF JAY LENO'S GARAGE » Exclusive First Looks: http://bit.ly/JLGExclusives » Ultra Rare Supercars: http://
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