Dream about driving car off bridge expresses an aspect of yourself that is unfamiliar or strange to you. You are no longer functioning efficiently or properly. You are feeling stuck in some aspect of your life, whether it is your career, relationship, etc. It is a metaphor for some fear and low self-worth. You are experiencing a loss in strength.
Driving car off bridge dream is about your limitations and restrictions. You are lacking control of where you life is going. You are forcing yourself to deal with your subconscious emotions. This signals the anxiety and fear that you are experiencing, as a result of some guilt or wrongdoing. You or someone in your life has an inflated ego and need to be taught a lesson.
If you dreamt about driving car off bridge:
You may find you have bitten off more than you can chew today. If you have just become involved in a new relationship, you may be regretting the haste with which you entered into it, as one or two issues may now have become glaringly obvious and will definitely have to be discussed. The sooner you can do this without causing offence, the better.