A Saint Louis man suffered severe injuries at 12:55 this morning when a tractor-trailer struck his car on Interstate 44, 14 miles southwest of Lebanon. The Missouri Highway Patrol reports that a vehicle driven by 48-year old Robert A. White of Saint Louis became disabled in the westbound passing lane of the Interstate and was struck by the tractor-trailer driven by 33-year old Sanjar Onorboev of Philadelphia, Pennsylvania. White was ejected from his vehicle, and both vehicles traveled off the left side of the road and struck the median cables. White was taken to Mercy Hospital in Springfield.