Ford Motor Co. said Thursday it will cut production of Excursions by 25 percent because the automaker overestimated demand for the largest sport-utility vehicle, which has been a target of environmental and safety critics. As of August, Ford will cut the annual production rate for the Excursion, made at a Louisville, Ky., plant, to about 52,000 from 69,000. The plant will boost output of F-Series Super Duty pickups 9.4 percent to 409,000 a year, so analysts don't expect the move to hurt profit at the second-largest automaker.