I don't think we need to go back 10 or 20 years as I can think of at least 5 or 6 if we go back that far (some in WA and some in CA).
Anyway, list Nissan dealers that have closed or are closing. I just recently learned that Nissan Sunnyvale (in California, part of http://www.dgdg.com/) closed in the past few months. https://www.nissansunnyvale.com now redirects to http://www.dgdg.com/. They were at https://web.archive.org/web/20200804021 ... ontact-us/ but aren't at https://www.dgdg.com/contact-us/. Some folks have posted on FB pics of the place being closed down or already closed, including one person I know.