Ford Motor Co. plans to shut down the Michigan factory that produces its F-150 Lightning plug-in pickup truck, its signature electric vehicle, through the end of the year as demand for EVs continues to wane.The move is the latest blow to a model that had been a centerpiece of Ford’s EV strategy and that Chief Executive Officer Jim Farley said would be “a test for adoption of electric vehicles.” The automaker will begin a seven-week shutdown in mid-November of the Dearborn plant visited by Presid...