Shootout: Jason pits the Nissan 370Z Roadster against the BMW Z4. Jonny compares the Skoda Superb Estate to other estates the Mercedes-Benz W124, the new Mercedes-Benz E250, and the Volvo 850R. Tiff drives the 4 door Aston Martin Rapide. Vicki drag races the new Rolls-Royce Ghost.