Eddie Willers is left alone with the last train broken down in the desert. How does Rand portray the result of the communist rule?

The train is left with its headlight shining into the limitless night. Soon the light itself will go out. The train which was once a symbol of indescribable progress is now a monument to failure. The passengers, save for Eddie, are carried away in a horse drawn wagon. The symbolism is that when progress ceases things do not simply remain the same, but regress rapidly.