I'm re-watching the original X-Files series on Amazon Prime instant video. In a number of episodes, someone crashes into another car or into some obstacle head-on, causing their vehicle's horn to begin blaring nonstop.

Is this actually a thing? I've never personally seen it happen, but for all I know it might be.

If it is, what's the mundane "it's not aliens, Mulder" explanation? Is it a deliberate attempt to call attention to a crash? I don't think it's anything electronic as some of the cars pictured crashing have been old late-70s models that are all mechanical.