RV 
To dream of a RV implies that you are achieving personal growth and spiritual realization. You should learn how to get the most out of life so that you can enjoy every moment.
Van
To dream of a van implies an unconscious desire to either move to a new house or at least do a major cleaning of your current home.
The suggestion here is to be ruthless and release yourself from the clutter and unnecessary debris that has accumulated, particularly in your bathroom and bedroom. There is also an indication of making room in your house for something new.
Truck
To dream of a truck denotes that you are overworked. You may be asking for too many responsibilities. On a related matter, pregnant women are reported to dream of trucks or driving trucks often. This may represent the load they are carrying in their wombs, or their changing physical appearance.
Landau
To dream that you are riding in a landau indicates that you will meet a fun, cheerful person who will bring joy and pleasure in your life.
To see an overturned landau in your dream indicates sudden halt to the favorable events in your waking life.
Subway
To dream that you are in the subway implies that you are attaining your objectives without having to use much physical effort. You are discovering your inner spirituality and personality. It may also mean that you are being too impulsive and you should think carefully before making a decision.
Tunnel
To dream of a tunnel represents the main female reproductive organ, the womb, and giving birth. Hence, it may indicate your need for protection and nurturing.
To dream that you are going through a tunnel suggests that you are discovering parts of your unconscious. You are in the process of gaining understanding and enlightenment. Alternatively, it may indicate your myopic nature.
To see light at the end of the tunnel symbolizes hope and a brighter future.
Bumper
Noticing a bumper in a dream, such as a bumper on a car or truck, indicates either detachment from something or someone you feel is important, or interference with you getting somewhere as in 'bumper to bumper traffic'.
Dreaming of a bumper can also suggest a small mishap that caused you some frustration but in general, a bumper is about interference in your life.
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.