Here’s something I hadn’t seen before; a garage door without tracks:
The whole system — doors, lift mechanism, folding mechanism –is pretty ingenious. The biggest difference between this system and a traditional garage door is that you don’t have the track rails extending into the garage space, and that only half the height of the door ends up above the open doorway; very handy if you have storage up above. The doors are built by Amarr and sold by a number of retailers and overhead door installers. I’ve never heard of them before, but it looks like they produce some quality stuff. I’m sure it’s not cheap, but you get what you pay for.