As hot as the fire burned in the two cars that had fire, it is very unlikely any attempt will be made to repair them, about the only thing that might even get salvaged are the trucks provided they didn't get too hot. From the photo's I've seen I can't see what the third damaged car is, but if there was no fire it probably could get repaired once they get out of evidence lock up---which could be years. Undamaged cars could get released to service once they are fully photographed and documented by the NTSB.