Probably most....but, some people are just lazy and will take the quick and easy way out. There was a Masi Biturbo traded in here (Tucson) and the local news was doing a story on c4c. The dealer that took the Masi in on trade showed it to them. Immaculate condition and the dealer said it ran great. He said the guy was just tired of spending what it cost to keep it running that way. So, yes most were probably worth no more than the Gov gave for them, but...
A few collector types would probably liked to have gotten their hands on a few of those for restoration... Buick ASC GNX, DB7, Bentley, Foose F150, Roush Stage 3 F-150, 928 S4...