There are so many holes in this potential explanation of the otherwise mystifying plot of Lost Highway that I cant even count them, but here goes anyway. What if Bill Pullman's character committed suicide in jail and went through a mutated form of reincarnation while in that jail cell. IN a type of Sixth Sense plot, but with the unrested spectre input into anotherbody, rather than haunting someone till they solve the ghost's ploblem/mystery, Pullman's soul, now free, looks for someone who has the potential contacts/qualities to solve the mystery. Thus it is transported into the body of Balthazar Getty, without his knowledge, given that he already has a link to the murder/mystery through his work at the garage, soon to be visited by Robert Loggia. Then, in a bid to find his wife's killer, Bill Pullman's soul, subconsciously driving Balthazar Getty leads him down a path, pursuing the remarkably familiar blonde Patricia Arquette, which will possibly lead to the discovery of the killer, or whether his wife is really dead. The only possibilities is that both Arquettes are the same, or that they are twin sisters. There was clearly a sexual tension between Pullman and his wife. The sex scene at the end represents the end the quest... he has discovered whether the blonde Arquette is his wife or not, and now he transforms himself back into his real self and exacts his revenge on Loggia. The evil spirit Pullman meets at the party is like a guide, or ally to help Pullman find out who has framed him/murdered his wife. This spirit makes the tape at of the couple sleeping, and sends it to them to warn Pullman about the impending crime, but it back-fired when Pullman was blamed for the murder. I can't think of an explanation for the burning barn at the end, or how/why he was transformed back to his old self, and what must've happened to Getty - perhaps he went back to his old life, and never realised where he'd been. I've just read what I've written and its so rambling and misses out so much, that I know it can't work. But I gave it a shot! I think in the end there is no explanation - its ultimate purpose is to confuse, and mystify people - just like the ending of the new Planet of the Apes.