As we’ve always maintained the best way to test a convertible sports car is in miserable, cold weather. I mean just look at this Jaguar XKR-S on its Nordic drive tour. The driver could not possibly have as much fun if it was a sunny day on normal roads. Mind you, the 550-hp XKR-S has such a happy tail it could probably powerslide on lava! It’s a magnificent sight, watching this Jag’s bottom trying to overtake its nose.