During World War II, Prince Philip once tested a car with an in-line 8-cylinder engine produced by Rolls-Royce at that time, and spoke highly of it. After World War II, Rolls-Royce specially produced Phantom IV for the British royal family. It was designed on the chassis of the "Silver Phantom", and its top speed can reach160 km/h. The favor of Prince Philip made the later Queen Elizabeth also tend to take Rolls Royce. Since then, Edward VIII, Queen Elizabeth II, Princess Margaret, Duke of Kent and many other members of the British royal family at that time have used Rolls Royce as one of their cars. 1952 is a memorable year for the British Empire and Rolls-Royce Company. In the year when Queen Elizabeth II ascended the throne, in front of countless people in the British Empire, Rolls-Royce passed slowly as the Queen's car, and the Queen's badge on the car attracted people's attention. Since then, Rolls-Royce has become the royal car of the British royal family, officially replacing Daimler used by the royal family. 1955 Rolls-Royce is authorized to use the Royal Badge. Since then, no matter where the Queen of England goes, the car must be Rolls-Royce, so that heads of state and nobles everywhere are eager to follow suit and are proud of owning Rolls-Royce.