Major Index Performance (Wednesday): $S&P 500(.SPX)$ : -0.3% $NASDAQ(.IXIC)$ : -0.5% Dow Jones: -0.4% (-155 points) Markets swung sharply throughout the trading session before sliding into the close. Wall Street is struggling to price in the latest round of Trump administration tariffs—this time, a 25% levy on all imported cars and car parts. Auto Stocks Tumble: $General Motors(GM)$ : -7.3% (biggest loser in the S&P 500) Ford: -4.8% Toyota, Honda, Volkswagen, BMW, and Mercedes-Benz also fell sharply in overseas trading. "The tariff announcement was arguably worse than Wall Street’s worst-case scenario." Investors should brace for volatility as markets dige