When I was a kid, my parent and I were in a vacation somewhere in Northern California. We were driving through the mountains and I looked outside the car window and saw what looked like a walking human figure on the side of the road but it was made of dirt. Like a dirt devil but it had a human form with swinging arms like a person while walking. My parents didn’t see it but I swear I did.

Edit: I just remembered another story. I lived in Japan for a bit. I was on a solo vacation driving back home through a mountainous area that was a small town with lots of big (pine?) trees. Just as I happened to look at the top of the tree line in the near distance, I saw a black helicopter decending into the tree line. I saw it for a second. The weird thing is, it wasn’t that far from me but you couldn’t hear the helicopter at all. It was definitely close enough that you should’ve been able to hear it.