Not necessarily. Vehicles today have so many safety features. There’s a very good chance that his injuries will be, if not minor, not major. Hang in there, kid.
This was an older truck.. I think a ‘94 Toyota, (work truck) and I have driven it. I also know that he is an excellent driver, and that had the accident been avoidable, he would have done it.
No air bag. Just seat belts. Hopefully, his experience in Deutschland gave him an edge.