Alcohol and speed are believed to be factors in a fatal two vehicle crash in Fond du Lac County. The crash happened shortly before 7:30pm on Highway 151 near Oak Center Road. A preliminary investigation shows that a south bound vehicle rear ended another south bound vehicle. The striking vehicle entered the median and rolled several times, ejecting the women. The 40 year old Waupun woman was pronounced dead at the scene. The driver of the other vehicle, an 18 year-old Beaver Dam man and two passengers, received non-life threatening injuries.