My uncle had a 1968 Dodge Charger in his garage, covered, that hadn't been taken out since then. At that time it was working, but the hoses and seals had deteriorated since (though the paint job was perfect) and he wanted it to be his retirement project to get it running again. Parkinson's set in and he wasn't able to follow through on that, unfortunately, and he ended up selling it for a considerable amount of cash.

You never know what's in peoples' garages.