1961 Lincoln Continental Directed Power Differential Sales Brochure. An Invitation to Added Safety and Convenience...order your Lincoln Continental with a Directed Power Differential for a new experience in driving pleasure. With a Directed Power Differential, power always goes to the wheel with the greater traction. With a conventional differential, power always goes to the wheel with the least traction. Whoever you are ... if you have to drive in all kinds of weather over all kinds of roads, be sure you specify Directed Power Differential on your next Lincoln Continental.