Believe it or not, shops I've worked at have fixed cars almost this damaged. I remember a fully done up 1-ton truck came in that was a moose hit. You know how big a moose is? It's huge. The engine actually pushed the firewall into the passenger compartment. There was no front end left, and the whole frame was bent to hell.
Here insurance companies will write off at 60% as a general rule of thumb. There are other considerations, but when you have a $80,000 truck that doesn't get written off until it reaches $50,000. You know how much of a domestic truck you can repair for $50,000? A WHOLE TRUCK.