As you can see in the pictures at Merkur, the frunk was demolished in the crash but the five occupants – all 18 or 19 – survived. While they were injured, they were able to extract themselves from the car. Some were taken by helicopter to the nearby helicopter in Munich. The legal driving age in Germany is 18.
As Electrek points out, the way the Model S flew through the air for 80 feet and then crashed in a field, "highlights the importance of a large crumple zone, like the Tesla Model S' front trunk (frunk), something easier to design with electric vehicles due to the lack of engines and the use of smaller motors."