A northeast Iowa man died in a single car accident early this morning. The Iowa State Patrol says 21-year-old Trenton Vanlengen of Parkersburg lost control of his car on Highway 218 north of Waverly. The car hit a guardrail and went into the ditch. Vanlengen was flown to a Waterloo hospital where he later died. A passenger in the car 20-year-old James Neuhaus was treated and released.