coupé 和 sedan 有什么区别？ - 知乎 A sedan — also saloon — is a passenger car in a three-box configuration with separate compartments for engine, passenger, and cargo Sedan's first recorded use as a name for a car body was in 1912 The name comes from a 17th-century development of a litter, the sedan chair, a one-person enclosed box with windows and carried by porters