To ride in a vehicle in a dream represents your life's speed and direction. Refer to particular vehicles for more detail.
The driver of a vehicle in a dream represents the person, or the aspect of yourself, or a part of your life, which is in control of your life's path. For example, to dream that your boss is driving you around indicates that your work has become the main factor in your life decisions.
To dream of falling from a vehicle indicates that you feel out of control.
To dream of crashing a vehicle represents a self-destructive action.