The museum is the largest repository of rail relics in North and South Carolina and averages 80,000 visitors annually. About three-thousand people were employed to repair the trains at the Spencer Shops in the first half of the twentieth century. The Flue Shop, where all the flues for steam engines were formerly produced, has become the Bumper To Bumper exhibit, featuring vintage and antique cars. These include: several Model Ts, a Model A, and even a Ford Model R (the 1907 predecessor to the Model T). A Highway Patrol car from 1935, a Divco Milk Truck, a Lincoln Continental and others are also part of the museum's collection.