The most prominent switch to an aluminum body was Ford Motor Co.’s F-150. Ford estimated that cut the pickup’s weight by 700 lb (315 kg). The Dearborn, MI-based automaker is extend- ing the move to aluminum with the 2017 Super Duty (F-250 and above), which is often used for towing. Ford estimates the Super Duty’s aluminum body will weigh as much as 350 lb (157.5 kg) less than the previous version. The company spent $1.3 billion at its Kentucky Truck Plant in Louisville, which produces Super Duty trucks, to handle the change in materials. The investment included a new body shop. With the F-150 and Super Duty, only three assembly plants (two for F-150 and the Super Duty factory) were affected. The trucks are sold primarily in North America, so the supply chain is relatively compact. Also, the F-Series is Ford’s highest volume vehicle line and its main source of