A touring car is an open car seating four or more. A popular car body style in the early twentieth century, it declined in popularity in the 1920s when closed bodies became less expensive. A tourer, in Britain and the Commonwealth, is a similar vehicle; however, the term is sometimes used to describe pre-war two-seaters which, in US terminology, would be roadsters. The term "all-weather tourer" was used to describe open vehicles that could be fully enclosed.