This is a film I had seen a clip of on youtube.
A man, blonde haired woman, and a child are stranded or lost on a rural country highway. This scene takes place during daylight. That’s all I got. It was definitely a horror film and might have had something to do with satanists/devil worshipers. This film was released either in the late 60s or early 70s.
Oh and it was also an American film in color.
Sounds a lot like Manos: The Hands of Fate. It’s one of those famous “so bad it’s good” movies, which is probably why you saw a clip of it on YouTube.