So I was riding home with an older guy friend when we went hiking in a haunted forest. (Pretty ironic because I live in the city.) The place was "known for ghostly and demonic activity" and nothing much happened when we went. We left at about 6:30. The forest was about a half hour away from his house but there was an enormous amount of traffic. By the time Austin and I were half way there, we come across this really long road that kinda seemed bare. To the right of the car there was a girl that looked in her teens with her thumb finger pointed out on the side of her (Universal Hitch-hiker sign). Austin starts to slow down and I said "Austin, don't." and he replies "Why? She could be running away from something." "Yeah, like a nearby prison or something." He slowed down enough for the girl to realize she was going to hitch-hike on our car. The girl smiles and hops in the back-seat. I kinda fake smiled and she said "Hi, I'm Angela." We started to drive and Austin says "I'm Austin, and this is (My name here)" I hear Angela cough and Austin asks "Where are you headed?" and there's no answer. I turned around. AND THERE WAS NO ONE IN THE FUCKING BACK SEAT. I told Austin to stop the car and we both got out. We didn't see her anywhere. After a few minutes, we rode home. I've had tons of paranormal expiriences but nothing as physical as this.
Okay, well here is a wikipedia page about it, yeah I have had this experience before with my sister. https://en.wikipedia.org/wiki/Vanishing_hitchhiker