Quote: It depends on the manufaturer, but I have always thought a sedan and a post car were the same thing, and a hardtop and a coupe were the same!
thats how Ive always been told. coupes were hardtops (no post). furthermore, coupes had smaller interiors than sedans. Sedans were big while coupes were small (think of the coupes in american graffiti- they had small cramped interiors)
