Sales of Ford Motor Co. vehicles fell by 25.6% year-over-year in March, capping a 17.1% decrease for the first quarter of 2022 and joining other automakers whose sales were hit by low inventory from a global semiconductor shortage. But the Dearborn automaker on Monday indicated there may be signs of some relief with improvement in deliveries to dealers. Meanwhile, it says demand for its cash-cow pickup trucks is strong even as inflation, high gas prices and increasing interest rates raise questions around new-vehicle affordability. Ford sold 412,984 vehicles in the first three months of the ye…