In the late '40s and early '50s Robert Young was the chairman of the C&O. Among other things, he was intensely interested in improving passenger service with innovative technology, and he started the C&O on a research project to develop a lightweight passenger train that would tilt on curves. This project was called "Train X" , and the C&O actually built a test car to develop the suspension. When Young left the C&O to become chairman of the NYC, the Train X project went with him, and eventually emerged as The Xplorer. This picture illustrates what might have been if Young had remained at the C&O.