Employees at Ford’s Kentucky truck plant in Louisville. Photo: APSouthfield, Michigan: Ford Motor Co. is spending $25 million more at its Kentucky factory to pump out more of the profitable big sport utility vehicles that are critical to funding its ambitious—and expensive—electric and self-driving vehicle plans. The investment will allow the second-largest US automaker to boost production of the new Lincoln Navigator and Ford Expedition by 25% from what the company was planning last fall, when the redesigned models first hit showrooms. The incremental spending is on top of the $900 million investment that Ford announced for the factory in June. Upgrades to the Kentucky truck plant in Louisville include 400 new robots, improved data analytics and a parts-making 3D printer.