Correction, FRiend - trotting out of town.
Just watched the video taken from a man in a car. Large numbers of those animals at a full trot.
I would have said stampede but trot is a good word too. Either way the buffalo were getting out of dodge and quick. Most of the time when one sees those animals they are more or less like a Sid and Marty Krofft puppet—they barely move! Just grazing in the field or woods. To see them stampeding down a highway is shocking.