What kind of vehicles were used in the film o brother where art thou?

In the film "O Brother, Where Art Thou?", a variety of vehicles from the 1930s are prominently featured. The main characters travel in a vintage Hudson Super Six, which becomes an iconic symbol throughout their journey. Additionally, the film showcases other period-appropriate vehicles, including a Model T Ford and various farm trucks, which help to establish the setting of the rural American South during the Great Depression. The vehicles contribute to the film's authentic, nostalgic atmosphere.