If there's a chance your garage door and walls are made of reinforced steel, you're screwed, if not, then consider yourself lucky, just get in a car, and drive through the garage door! Oh, you don't have your keys? Then grab a sledgehammer and swing it at the door! Oh, you don't have a hammer or anything blunt to use? Call 911 then. Oh, you didn't bring your phone? Well just kick the door repeatedly and slam it with something, you have to have something in your garage that you can use! When smashing the door, aim for the hinges. Oh wait, just open the regular door ... Is it that hard? Most door locks are behind the door if you're outside, which you aren't, so unlock the door and get out of there!