in pick-up trucks, and sport utility vehicles. Just as important as power transmission is braking. In power transmission, the torque applied to the wheels is countered by an equal and opposite reaction in the axle housing, but in braking, the torque of braking the wheels is equal but in the same direction. In a rear wheel drive car, the braking applied by the rear brakes is just as important as the power transmission, and the problem is the same and is solved in the same manner. Firmly anchoring the axle housing to the leaf springs transfers both directions of torque, (both acceleration and braking), to the car body. There is no connection between the Hotchkiss drive and the modern US suspension-modification company called Hotchkis. References Automobile Engineering: A General Reference Work Automotive transmission technologies Hotchkiss et Cie Shaft drives