One person was killed in a car versus semi crash in Fond du Lac County. The crash happened Saturday evening on southbound Highway 175 at Fox Ridge Drive. According to the state patrol a car struck the semi-tractor trailer, getting pinned under the trailer as the semi was backing into a driveway off Highway 175. The car driver was pronounced dead at the scene. A passenger in the car was flown by helicopter to a hospital with critical injuries. The crash remains under investigation.