Here's a look back at some machines that we don't have around anymore: WABCO motor graders. Or, more precisely at this time, LeTourneau-Westinghouse motor graders - originally developed by R.G. LeTourneau before it was purchased by the Westinghouse Air Brake Co. The WABCO name came along in 1967, a few years after this early-'60s training film was released.