Driving 
To dream that you are driving a vehicle symbolizes the road you're traveling through life. This dream is telling you about the manner through which you are traveling. If you can't see the road ahead of you, then you may not have direction in your own life. You don't have ambition. If the road is winding, this suggests that you are having difficulty reaching your dreams.
To dream that someone is driving you indicates that you are reliant on the person driving. You have lost power over your own decisions and follow others instead. If you are driving from the passenger side, then you are attempting to take charge of the direction of your life. You are starting to make your own choices.
To dream that you are driving a cab or bus indicates manual work with few chances to move up in the business.
To dream that you are driving in reverse indicates that you are facing challenges that seem to be holding you back. If you drive backward into water, then your feelings are keeping you from being successful.
To dream that you are driving drunk suggests that you have given up control in your life. Somebody is controlling you.
To dream that you drive off a cliff indicates that the more you achieve in life, the tougher it will be to hang onto that success. You may sense that getting promoted will be a double-edged sword. You could also be sensing that it's almost impossible to please everyone all the time.
Vehicle
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.
Race Car
To dream of a race car is a representation of your working nature and stubbornness. It may further represent how competitive you are and how strongly you feel the urge to win. The race car may also be a symbol for ethnicity and how you view it.
To dream that you are driving a race car is an indication that you live your life in the fast lane. You need to learn to slow down before your fast paced life puts your health at risk.
To dream of racetracks is another representation of your fast paced life. You are always trying to get ahead. Conversely, it may be a metaphor for the way you feel about your life. If you feel you are not making progress, but merely 'going around in circles,' the racetrack dream may be a common occurrence for you.
Mechanic
To dream of a mechanic indicates that you are nursing old emotional wounds that should be tended to. You need to move on in your life.
Backseat
Dreaming of a backseat suggests that you could be feeling that you are not quite in control of an aspect of your life.
Being stuck in the backseat of a vehicle and unable to change your position indicates that it may be time for some internal inquiry. You may have eagerly handed over control of your life to somebody else, but are now resenting them for it.
Car Wash
To dream of a car wash indicates a complete physical makeover. It may be time in your waking life to address some nagging issues like going to the dentist for example. Driving through a car wash implies a release of old ideas and a bright new perspective. A car wash is a good omen indicating that you have what it takes to make some fundamental and positive changes.
Passenger
To dream of being a passenger indicates that you lack control and allow others to make decisions for you.
Seeing other passengers suggests much effort exerted in gaining the approval of others. You may sense that some people are leeching off you.
Seat Belt
To dream that you are wearing a seat belt implies that you are having difficulty expressing your feelings. You must learn how to control negative emotions and stay focused.
To dream that you are having trouble putting on your seat belt represents concerns that you have regarding upcoming events or situations.
Limousine
To dream of a limousine signifies that you are vain and self-centered. You think everything is about you. You feel a need to impress others. In addition, if the color of the limousine in your dream is black, it denotes unwillingness to adopt changes or difficulty with submitting to authority. On one hand, this dream may symbolize your elite status that you are a cut above the rest with wealth and power at your disposal.
Headlights
Headlights in a dream indicate an approaching problem. You may see warning signs in your daily life which have caused you to fear an impending conflict.
To be caught in the headlights in a dream means that you are feeling vulnerable to a problem which appears unstoppable. This may also indicate a fear of being under the spotlight such as an upcoming speech or an important exam.