Overview: Jaguar has done very well since its recent privatisation — especially in its sales in the United States. Now it prepares to launch its most important new car in almost 20 years. Chris Goffey road tests the new XJ6 and asks if it will be a big seller in both home and export markets. William Woollard has been trying out the latest addition to the Citroën family. Top Gear viewers played their part in suggesting some of the features that have been incorporated in its design. So how will the Citroën AX fare in the fiercely competitive smaller end of the car market? And, apart from fuel consumption, running costs and the sheer aesthetics of a new car, should you pay more attention to how much it will depreciate. Why do some cars lose more value than others, and who decides, anyway?