There are classics in car design, such as ford's Mustang and porches 911, whose shapes have persisted with subtle variations for forty years. jaguar's XJ sedan is almost equally long-lived, but sales have dropped as it passed through many iterations that were all much too closely based--even the last all-aluminum model--on Sir William Lyon's original design. Now, finally, the XJ has a completely new shape, impressively handsome and vastly better, in terms of space and comfort, than any of its forebears.

The initial presentation to the American press at Hedsor House, an archetypical English stately home, was the best I've experienced in half a century of seeing new cars before their public showing: we were marshaled onto a second floor balcony overlooking the home's beautiful park and its long driveway. Two of the new cars--one of each wheelbase--approached and moved smoothly around the area so we could see them from every direction while Jaguar design leader Ian Callum talked about their design. Given that it is impossible to properly judge a new design until you have seen it in motion, this was a brilliant way to present a vitally important product.