I may or may not have already shared something about Back To The Future shoes. Really, there have been plenty of people who have tried their hand at creating the self-lacing sneakers envisioned in Back To The Future II. But now, a designer/engineer/fan named Blake Bevin has not only created a working model–he’s also provided detailed step-by-step instructions on how to make your own. See his Power Lacing Nikes in action below. If you’d like a pair of your own, you can check out Instructables for full directions. Excuse me as I cry in all my geek glory.