 The Dodge County Sheriff's Office is also investigating what led to a 91-year-old Waupon man dying while driving on Highway 151 near Waupon. A passerby reported a car in the ditch on 151 between Highways 49 and 26 around 2 p.m. yesterday. When an officer arrived, they found the man deceased in the vehicle. It's unknown if the man suffered a medical condition or if going into the ditch is what killed him. Authorities are asking if anyone witnessed the vehicle going into the ditch to call the Dodge County Sheriff's Office.