Fire damage can be almost impossible to fully repair, and that damage can be extensive. One of the worst issues is that as a harness full of wires burns, and loses its insulation, wires that are electrically hot, can short to other wires, and burn the harness all through the car. It can create a cascade effect, one wire burning another, shorting, burning others. You just wont know until you get in there and start digging. All I can say is that ive done about three or four and almost wont even look at them anymore unless its extremely minor, which means starting with no burned paint. To burn your hood that bad there was a great deal of heat, and for quite a while.

And thats before we look at what damage the engine may have suffered. If this just happened, I would immediately pull the injectors and try to crank the motor, hot wiring the starter off a different battery if you need to. If it got water in it it will begin rusting within a day or two, cranking it with the injectors out will blow any remaining water out.

Just to be clear, DO NOT crank it until the injectors are removed. And water could do further damage, if it hasnt already. If they truly stopped the engine with water, its likely toast, but you never know.

Once its clear, put the injectors back in and try starting it. If it runs okay you could probably sell it for a few bucks. But from this point its really a parts car IMHO. Youll go broke and wear yourself out trying to repair it.

Further, the tow truck operator is responsible for all damages he caused, car, house, doesnt matter. They are two separate events, so dont let them say the car was junk and therefore any further damage didnt devalue it further. If they try, ask if its legal to go into a junk yard and damage their cars, seeing as they are already junk.