The air wedge is a small thing, but it has a lot of power. Weighing only 120 grams, the wedge can help you unlock a car door. To accomplish this, you need to insert the wedge between the car door and inflate it. Through the resulting gap, you can slip a probe that unlocks the button or lever of the locking device. In doing so, the door will not be damaged or deformed, and when you release the air from the airbag wedge, it will remain in place.