the average car is 6 feet wide, the average dirt road is 22 feet wide. this looked like it would fit those standards just barely. the "creature" took 6 steps to clear the road from starting at just over the 3/4 mark of the road. which is about 12 feet to cross. ( give or take...quick est..) which means the stride would be six steps to cross 12 feet is a 2 feet per step. the normal step for a human. (also going by normal road widths. an estimate of size can be guessed at, which also puts it in the human size range.... if it was a bigfoot it would be a small or young one...
gotta go with selectric on why were they filming to begin with. in the 70's the vhs recorders were huge and awkward to use. in a car would be even more so...quality, length, plot, etc...almost makes me think of the gable film that surfaced a few years back....
just not enough to be convinceing. leaves too many unanswered questions and possibilities of a hoax.