Home/American Shipper/Clement to succeed Hertwig as CSXI president American ShipperIntermodal Clement to succeed Hertwig as CSXI president FreightWaves Staff · Monday, May 24, 2010 Facebook Twitter/X LinkedInClement to succeed Hertwig as CSXI president CSX Corp. said Jim Hertwig, president of CSX Intermodal, will retire at the end of June and be replaced by William Clement. Clement is CSXI's assistant vice president of sales and marketing.