Where the bufallo roam

I was wondering if anyone else has had this problem? Or experience or adventure.. Whatever word you would like to use to describe it.
A good many years ago I was on a Thanksgiving drive with my friend to have dinner with her parents.  It was several hours from Indiana to somewhere in Michigan. We were over halfway there and it was a quiet patch of road. One moment the road was there, next minute, no road, not even a path.  An open field with tall grasses, trees, and, well, just when you think it can't get weirder, bufallo.  Like a herd. A herd of bufallo who are startled by a car appearing and begin to stampede. My ex, B, is yelling "what do I do?" (like I do this all the time?) I yell back (we have to yell, there is a stampede going on) "Try and stay where the road was!" Which she did a most excellent job of. I'm not sure how long we were in buffalo-land before suddenly we were back on the road again.  That's when we heard the police siren behind us.  Have you ever tried to explain to a nice police officer that you were driving erraticly because of the invisible herd of buffalo from another dimension?  B just went with how tired she was, and he let us go with a warning.

Have been on that road many times after, nothing weird, and no bufallo.