Right now I’m watching the movie Muhammad Ali’s Greatest Fight. In the opening scene, a law clerk is driving what is now considered the classic VW Beetle, and it overheats. As it overheats, steam comes form the rear-mounted engine.
I wouldn’t consider myself an expert on cars, but even I know a VW bug of that era is air cooled. Where is the steam coming from? Is it even possible for an air-cooled engine in that configuration to overheat in Washington, DC summer weather?
They didn’t need to do this (make steam come out) to make a VW Beetle of that era breaking down seem believable. They might have been reliable for the time, but by modern standards, they’re anything but reliable.