These are interesting symbols and many people have requested adding them to the dictionary.
Traveling is very common theme for our dreams.
Traveling in a car is the most common form of this type of dream.
Traveling in a vehicle generally can represent our journey through life, or a portion of it.
If you find yourself in a garage or a parking lot, two different inferences can be made. Consider the dream’s content and mood in it as well as your current dilemma or situation in life. The parked car could represent a period of inactivity and indecision.
The dream could be pointing out that you have been idle for a period of time and that it may be good time to “get a move on.” The more positive interpretation of this dream might be that the parked car is symbolic of a reflective period or mood.
You may be in “park” for a while so that you can rest, relax, and regroup while thinking things over.