both were extremely scary and made me feel not only scared but a little crazy. after some digging this is what i found on car crash dreams:
To dream that you are in a car crash, indicates that your beliefs, lifestyle, or goals are clashing with another's. It may also represent a shocking situation or painful experience.
The car in your dream may symbolize the physical self or ego development and ego function. In that, it represents the way that you travel through your life's journey. Consider all of the details in the dream, including its emotional content (e.g. difficulty of the road, identity of the driver, direction of the incline). Recurring car dreams usually deal with life's major themes that may include issues of control and sensibility. By carefully examining this dream, you may gain insight into important areas of life, including to how well you are navigating from one stage of your life to another, if you are assertive and take charge or are passive. Dreaming about traveling in a car is a very, very common dream theme that provides valuable information in regard to a specific part of or long-standing theme in your life's journey.
To dream that someone else is driving you, represents your dependence on the driver. You are not in control of your life and following the goals of others instead of your own
If you are the passenger, then you are taking a passive role. If you are in the backseat of the car, then it indicates that you are putting yourself down and are allowing others to take over. This may be a result of low self-esteem or low self-confidence. Overall, this dream symbol is an indication of your dependence and degree of control you have on your life.
Dreams of crashes may actually be a sign pointing to something in your life that needs repair--a relationship which is out of balance or a work situation that is causing you distress.
Dreams of someone else driving your car are potent dreams. Remember, your car is your vehicle. You are meant to be the driver plotting out your course. Your car is meant to be your ticket to freedom. When someone else is in the driver's seat then symbolically, that is the person you may feel is or even wish were in charge of your life.
Look at who is in the driver's seat. Is it a parent, a spouse, a child, a friend? How do you feel about the person driving the car? Are you happy about where they taking you? If you like the person driving the car and are happy about where you are going, this dream might point to you wishing that you handled your life like the person in the dream does. It might also be a wish for being 'rescued' by that person from a situation in your life that you are unhappy with.
Alternatively, if you don't like the person driving or the course you're on, it may feel like that person is in charge of your life, or that you feel like you're making the same choices as someone whose life you feel is less than ideal.
Remember though, the person driving the car is a symbol. Dreaming of someone of the opposite sex driving your car can point to an animus/anima figure who you feel is in control. For women, the animus is the thinking part of the psyche, for men, the anima is usually representative of the emotions. Do you feel you are making decisions according to faulty logic or misguided emotions? This is where your feelings about the driver of the car give you the most information about the dream.