Is Is it a saloon? Is it an estate car? Is it an SUV? asks Geraldine Herbert  What is it? No one could accuse Citroën of being dull. Synonymous with Gallic eccentricity, the carmaker has innovated and inspired for more than a century. From the funky 2CV to the elegant DS, Citroëns of the past have been a curious mix of futuristic features, supreme comfort and poor handling. New to the Citroën range is the C5 X, our test car this week, which promises to combine the best of three worlds — the elegance of a saloon, the versatility of an estate and the appearance of an SUV. Is it a looker? With avant-garde styling, the C5 X is more of an estate car with a slightly raised driving position. The very distinctive front-end v-shaped lighting signature is instantly recognisable and the extended bonnet, the high belt line and the rear wheel flare are all key design features of the French car company. But it is not all style over substance; drawing inspiration from aeronautics, the 3D LED rear lights stretching around the vehicle are for increased efficiency, while the aerodynamics of the body style is to reduce fuel consumption. How about the interior? Inside, the car is surprisingly bright and airy and the uncluttered dashboard enhances the feeling. Creature comforts include a 10in touchscreen, and an infotainment system that increases to 12in from the Flair trim level. On the downside, it is a little cumbersome to use but...