Actually, on reading your description again, it sounds nothing like The Vanishing. It sounds rubbish. It does however remind me of a TV movie I watched with my old man when I was about 11, which had a haunted Jaguar Mark II, which may well be this...http://www.imdb.com/title/tt0089630/plotsummary. And you might get something from this: http://www.imdb.com/Find?select=Plots&for=buried+alive. I got bored looking through the various results. On another note, I discovered the other day that one of my pals has an entry on imdb.com, which is cool. For him.