CSX Corporation has launched a $670 million initiative with Wabtec Corporation to upgrade its locomotive fleet, aimed at enhancing its Southeast Mexico Express (SMX) service. These upgrades promise significant improvements in transit times between key markets, offering up to 2.5 days faster delivery between Atlanta and central Mexico. While the company boasts a strong market cap of $83.8 billion and a 56.6% rise in stock price, it continues to grapple with stagnant unit sales and declining earnings per share annually. Despite these challenges, insider buying suggests confidence in CSX's future.