If dreamed you that you got into the accident, at the same time having damaged others Mercedes, then in real life the majority of your problems comes from your diffidence and own forces. A dream in which you go on Mercedes, without paying to anybody attention and without following rules, confirms your unsatisfied ambitions. You should monitor their manifestation in real life not to become a general laughing-stock.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.