Horror clip about a man possessed with a demon

This was a clip i saw from cable tv and the scene i remember was a guy that was possessed by some demonic spirit then begins to go after someone… Then there was a scene about a guy travelling with his sister in their white van… Then this possessed guy hitchhikes with them and ends up having sex with the sister together with his brother at the back of the van then the scene shifts to the back side of the van showing blood dripping… This was definitely an english film and colored somewhere around 1995-2000

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