The carriages used for the Gran Tour acquired the name "Gran Turismo" in Italian. When automobiles replaced horse-drawn carriages as the conveyance of choice for Grand Tour participants in the early Twentieth Century, a certain type became popular. It was a fast and light two-seater, but more comfortable and well-appointed than a pure sports car. The genre reached its peak after World War II, when limited-production and specially-constructed two-seaters became popular with members of royalty, wealthy sportsmen, and movie stars. Many of these cars were raced, and the production car category in European racing became know as Gran Turismo, Grand Touring, of just plain GT. Regulations required two-seat interiors, spare tires, and luggage capacity, and in the 1950s at least, GT-class racers could be and were driven to the track, raced, and driven home. Production-based racing classes are still know as "GT" classes in many racing series today.