The development of Super-Liner began life in the early 1970s under Brockway Motor Company, a subsidiary manufacturer of Mack Trucks.

Following the introduction of the long-hood "western" Mack RS700, Brockway commenced development of the "Super-Liner", featuring a squared-off hood (to accommodate a larger radiator/engine).

While sharing the cab of the R-series tractors (along with its model designation), the Super-Liner was built on the frame of the WR Cruise-Liner COE.

Visibly similar to its predecessor (with the exception of four square headlights), the Super-Liner II adopted the full-length frame rails of the MH Ultra-Liner COE.

As its replacement, Mack introduced the CL700, a longer-hood version of the CH600; though shifting to a set-back front-axle layout, the CL continued the use of the Super-Liner frame.

Each example was named after people influential to Australian history, including James Cook, Captain Bligh, Ludwig Leichhardt, Governor Phillip, Ned Kelly, Kingsford Smith, John Flynn and William Hovell.

[7] In the 1978 film Convoy, a Mack RS700 is driven by main character Martin "Rubber Duck" Penwald (Kris Kristofferson).