CNET had a test drive with the 2006 model of the Jaguar auto:

The 2006 Jaguar Super V8 comes loaded with all the accoutrements one would want in an executive limo--standard--but this car's performance suggests giving the chauffeur the day off. Jaguar created the Super V8 by dropping the 400-horsepower supercharged V-8 found in the XJR into the long-wheelbase XJ chassis. The result is an executive stretch limo with one of the roomiest and most fully featured rear seats in the business, along with impressive driving performance.



Link: CNET