I could not remember much about this movie except a scene where a brother and a sister who owns a van, picks up a hitchhiker somewhere. The guy turns out to be possesed by a demon or somewhat evil. He somehow talks the brother into agreeing to let him have sex with her sister at the back of the van. After that sex scene the camera trails to the back side of the van showing blood dripping down from the van to the pavement. It was a movie in the 90’s definitely american and saw this probably on HBO or Cinemax(not certain) but definitely on cable tv.