So I have an emergency car question —- If I have a mid-1980's Chrysler New Yorker 5th Ave, how would I stop the engine if the ignition key/barrel/switch doesn't turn it off?

Does anyone remember the article posted to Oppo I believe, about a month ago from an online car site about 80's cars? I'm trying to remember the site and go back and show someone the pictures from that article but I can't for the life of me remember it!