fire damaged cars……why not?

ok i have thought about this before. i saw an article in this months mopar collectors guide in the back. it was about a guy who had 2 cudas a 73 and a 74 that got destroyed by a fire set by someone to his and about 7 other peoples garage's one night. the cars were burnt up completly in the fire. given the fact you could get all the restoration parts for a car and the car wasn't melted why could you not restore it back? does it ruin the metal or something?
Author: admin