Since cars are my passion, I have been around a couple. I know of several more.
Nothing of value or any $. Did find sparkplugs and other small pcs. Then there was a right front fender....
Have my eye on several old repair shops & gas stations, but, just waiting till I'm on the property for business to talk to property owner. I've found P.O. are much more agreeable when I have the company truck with big identifiers on the doors, vs being in my personal rig.
I'd like to go through old cars at a junkyard. Probably TONS of silver under the seats!