I think it can be auto theft, but only if the car has been tampered with and missing enough of its original pieces. Like stealing somones rice ass honda and taking his B block out and selling it on ebay
Salvage is for people with alot of money. I bought a "salvaged" Mustang some years back and that project went straight to hell. Nothing was in the car. The engine's internals were missing "No wonder it would'nt crank over"
Depends on the condition of the vehicle. Rear end salvages are the best, because you can always save the engine if not the entire vehicle because rear end damage rarley seriously breaks anything.
Side impacts can be worked with depending on how bad the body is knocked in.
Front impacts are very tricky. If hit hard enough the front end usually twist out of its original geometry meaning you'll have frame damage. Frame damage is not only dangerous but expensive to fix. If the front end was damaged so badly that it bends the frame that project is a no go...