I think the only salvagable parts of that car are the driver's side wiper arm, the passenger side indicator light, at least two rims, the lug nuts, the radio knobs, the driver's window glass and its electric window motor.
Insurance will probably give him the blue book and he can sue the shop for the difference to pay off the loan.
I liked one guy's suggestion:
Wow, I hope you get a new Z out of the deal.