I was telling my friend about a novel I read in middle school about a girl (or possibly a guy but I think it was a girl) who had a horse that died and was reincarnated in a bike. The main premise of the story was that the bike could move on its own and the main character knew this was because of the dead horse's spirit. I cannot find a trace of this book online at all and my friend is starting to think it doesn't exist, though I swear it does. It sounds like a ridiculous story, but I know it's real. I don't remember too much about it, but I think the cover had a red bike on it with a black transparent horse rearing behind it. Has anyone else seen or heard of this book? Can you help me figure out what it's called and who the author is? This would be greatly appreciated, it's driving me crazy!! Thanks.