It is drivable just, 20 mph with a lot of care, I would guess the insurance company would go through everything else that needs doing and come up with and enormous bill so I am going to have fork out myself.
Apparantly somebody saw it happen. The driver was pissed of course, the drove into it, then went away, left his keys in the car, came back later, tried to start it, and then abandoned it, he is local it seems, so there may be some hope if the other car was insured, even so in this area that is not too likely.