After President Donald Trump announced a hefty 25% tariff on all imports of cars and trucks into the United States, major automakers in Europe, Asia, and the U.S. have seen their stock prices take a significant hit. Investors reacted swiftly, driving shares down in premarket trading on Thursday. This announcement has sparked fears among industry leaders about the potential impact on sales and supply chains. Companies now face crucial decisions as they navigate this new financial landscape and its implications for their operations moving forward.