The first interurban cars were made of wood. These cars were essentially an evolution of the streetcar or trolley. This enclosed car is very typical.
Parlor cars were the interurban's version of first class. These were reserved for special excursions. Some large companies and wealthy individuals owned their own luxury cars. A parlor car generally featured a solarium and an observation deck.


Interurbans constructed of steel were less vulnerable to the threat of fire than wooden ones. Surprisingly they were also lighter. Their lighter weight and wind tunnel testing enabled models such as the "Bullet" (below) to achieve speeds exceeding 90 m.p.h. (Middleton 69)
Two steel cars could be joined as a single unit with an articulated coupling.