What is a Barn Find

We see vintage and classic cars nearly every time we take a drive around the countryside. We live in rural Missouri down in the Ozarks. We have seen several 1955 Chevy Air rust buckets, one in a corner of a meadow with cattle grazing around it, another 1955 Chevy was parked next to a vacant 1960s gas station. The gas station had been closed for several decades and weeds grew tall around the Chevy. In both cases the owners considered the classic cars valuable and not for sale. "Going to fix 'er up someday," was (and is) the usual first response from those in control of these classics. But the weeds still grow tall and the rust is consuming the prized classics.