CPKC, CSX upgrade Southeast Mexico Express with dedicated train, faster transit times

Direct connection links U.S Southeast to Texas and Mexico markets   CALGARY, AB and JACKSONVILLE, Fla., May 6, 2026 /PRNewswire/ - Canadian Pacific Kansas City (TSX: CP) (NYSE: CP) (CPKC) and CSX Corporation (NASDAQ: CSX) (CSX) today announced upgrades to the Southeast Mexico Express (SMX) premium service featuring faster transit times with more origin and destination options for customers looking to reach new markets.