I am still trying to figure out if the story that I read in the 80's pointing out the need to always test backup tapes that was reinforced by saying some guy

I am still trying to figure out if the story that I read in the 80's pointing out the need to always test backup tapes that was reinforced by saying some guy in Sweden erased them by putting on a heated car seat in the Winter was true or just a way to drive home a point. (I have never forgotten that story but can't find anything on the web about it today at least.)