Bathtub

The term “bathtub” in motorcycle and automotive design refers to a distinctive bodywork style that resembles an upside-down bathtub. This design was notably used on some Triumph motorcycles introduced in 1957 and later dropped in the early 1960s. Additionally, it was also seen on Nash cars from the 1950s. The bathtub design typically featured a rounded, streamlined shape that covered much of the rear section of the vehicle, contributing to its unique appearance and aerodynamic profile for its time.