A few years ago, Nissan developed a type of paint for its cars that can automatically fix scratches — now the company's taking its tech off your car and onto your iPhone 4 or 4S. The new Nissan Scratch Shield is made of ABS plastic that makes up the case is designed to be more rigid than other plastics, and a gel-style surface that promises to handle scratches better. And did we mention it heals itself? The case's paint is made of polyrotaxane, which Nissan says reacts when its structure is changed and actually morphs back into its original shape, covering over the scratch. The process takes between an hour and a week depending on the severity of the blemish, and though it can't handle huge gashes it should do fine with your iPhone's normal wear and tear. It's being beta tested in Europe right now — the technology is also being licensed to NTT Docomo to be used in its phones — and if Nissan is happy with the results the case should be on sale later this year, though whether that means it comes to the US or not isn't clear just yet.