Urban legend
From RationalWiki
My brother's girlfriend's cousin told her that she knew this guy who strapped a rocket to the top of his car and it took off straight into a cliff at like 7000 mph and when they found the wreckage, like, Dude, there wasn't one piece larger than a football sandwich grain of sand. No, really, she said it was true.
Or something.
If urban legends stay around long enough, they may be written in book form, and who knows, in a couple of thousand years people may make a religion out of them.
