Things you shouldn't've seen

You know when you're listening to the radio in the car when suddenly, and always in the same place, the signal gets interfered by another signal, and your music switches to something different before driving past the spot and it changes back? I don't know why it happens, it is very annoying and I've never stuck around for long to hear what it actually switched to.
What if that actually happened with a place, the scenery. Like it switched to something entirely different while you pass through the spot for a second. You could see entirely out of place settings, or a glimpse of something messed up.